155878464 has 56 divisors (see below), whose sum is σ = 471350848. Its totient is φ = 44536320.

The previous prime is 155878453. The next prime is 155878493. The reversal of 155878464 is 464878551.

It is a tau number, because it is divible by the number of its divisors (56).

It is a super-3 number, since 3×155878464³ (a number of 26 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56647 + ... + 59334.

Almost surely, 2^155878464 is an apocalyptic number.

155878464 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

155878464 is an abundant number, since it is smaller than the sum of its proper divisors (315472384).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

155878464 is a wasteful number, since it uses less digits than its factorization.

155878464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116003 (or 115993 counting only the distinct ones).

The product of its digits is 1075200, while the sum is 48.

The square root of 155878464 is about 12485.1297149849. The cubic root of 155878464 is about 538.1814269980.

The spelling of 155878464 in words is "one hundred fifty-five million, eight hundred seventy-eight thousand, four hundred sixty-four".