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145756863 = 3272313601
BaseRepresentation
bin10001011000000…
…01001010111111
3101011021012211100
420230001022333
5244303204423
622244024143
73416625060
oct1054011277
9334235740
10145756863
117530431a
1240992053
1324274785
1415502567
15cbe2343
hex8b012bf

145756863 has 12 divisors (see below), whose sum is σ = 240614608. Its totient is φ = 83289600.

The previous prime is 145756859. The next prime is 145756889. The reversal of 145756863 is 368657541.

145756863 is a `hidden beast` number, since 14 + 575 + 6 + 8 + 63 = 666.

It is not a de Polignac number, because 145756863 - 22 = 145756859 is a prime.

It is a super-2 number, since 2×1457568632 = 42490126223201538, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145756063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1156738 + ... + 1156863.

Almost surely, 2145756863 is an apocalyptic number.

145756863 is a deficient number, since it is larger than the sum of its proper divisors (94857745).

145756863 is a wasteful number, since it uses less digits than its factorization.

145756863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2313614 (or 2313611 counting only the distinct ones).

The product of its digits is 604800, while the sum is 45.

The square root of 145756863 is about 12072.9807007218. The cubic root of 145756863 is about 526.2712810287.

The spelling of 145756863 in words is "one hundred forty-five million, seven hundred fifty-six thousand, eight hundred sixty-three".

Divisors: 1 3 7 9 21 63 2313601 6940803 16195207 20822409 48585621 145756863