155412864 has 128 divisors (see below), whose sum is σ = 463039200. Its totient is φ = 51314688.

The previous prime is 155412833. The next prime is 155412871. The reversal of 155412864 is 468214551.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 666892 + ... + 667124.

Almost surely, 2^155412864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155412864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (231519600).

155412864 is an abundant number, since it is smaller than the sum of its proper divisors (307626336).

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

155412864 is a wasteful number, since it uses less digits than its factorization.

155412864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 449 (or 431 counting only the distinct ones).

The product of its digits is 38400, while the sum is 36.

The square root of 155412864 is about 12466.4695884601. The cubic root of 155412864 is about 537.6450536221.

The spelling of 155412864 in words is "one hundred fifty-five million, four hundred twelve thousand, eight hundred sixty-four".