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145383371 = 7176131993
BaseRepresentation
bin10001010101001…
…01111111001011
3101010120020111022
420222211333023
5244204231441
622232023055
73413511140
oct1052457713
9333506438
10145383371
1175079751
1240831a8b
1324173783
14154463c7
15cb6b84b
hex8aa5fcb

145383371 has 16 divisors (see below), whose sum is σ = 176301504. Its totient is φ = 117033984.

The previous prime is 145383347. The next prime is 145383401. The reversal of 145383371 is 173383541.

It is not a de Polignac number, because 145383371 - 222 = 141189067 is a prime.

It is a super-2 number, since 2×1453833712 = 42272649126647282, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145383311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71951 + ... + 73943.

It is an arithmetic number, because the mean of its divisors is an integer number (11018844).

Almost surely, 2145383371 is an apocalyptic number.

145383371 is a deficient number, since it is larger than the sum of its proper divisors (30918133).

145383371 is a wasteful number, since it uses less digits than its factorization.

145383371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2630.

The product of its digits is 30240, while the sum is 35.

The square root of 145383371 is about 12057.5026850505. The cubic root of 145383371 is about 525.8213851368.

The spelling of 145383371 in words is "one hundred forty-five million, three hundred eighty-three thousand, three hundred seventy-one".

Divisors: 1 7 17 119 613 1993 4291 10421 13951 33881 72947 237167 1221709 8551963 20769053 145383371