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145202293832 = 2319926772
BaseRepresentation
bin1000011100111010111…
…0110010110001001000
3111212210101201210021112
42013032232302301020
54334333241400312
6150412141025452
713330151063501
oct2071656626110
9455711653245
10145202293832
1156641a00532
1224183b55288
13109005cbc7b
14705650bba8
153b9c7d6d22
hex21cebb2c48

145202293832 has 36 divisors (see below), whose sum is σ = 274034064105. Its totient is φ = 72129616416.

The previous prime is 145202293823. The next prime is 145202293837. The reversal of 145202293832 is 238392202541.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 83721107716 + 61481186116 = 289346^2 + 247954^2 .

It is an ABA number since it can be written as A⋅BA, here for A=2, B=269446.

It is a super-2 number, since 2×1452022938322 (a number of 23 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 145202293832.

It is not an unprimeable number, because it can be changed into a prime (145202293837) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 214478678 + ... + 214479354.

Almost surely, 2145202293832 is an apocalyptic number.

It is an amenable number.

145202293832 is a deficient number, since it is larger than the sum of its proper divisors (128831770273).

145202293832 is an frugal number, since it uses more digits than its factorization.

145202293832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1758 (or 878 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 41.

The spelling of 145202293832 in words is "one hundred forty-five billion, two hundred two million, two hundred ninety-three thousand, eight hundred thirty-two".

Divisors: 1 2 4 8 199 398 677 796 1354 1592 2708 5416 39601 79202 134723 158404 269446 316808 458329 538892 916658 1077784 1833316 3666632 26809877 53619754 91207471 107239508 182414942 214479016 364829884 729659768 18150286729 36300573458 72601146916 145202293832