155874240 has 112 divisors (see below), whose sum is σ = 549920160. Its totient is φ = 41564160.

The previous prime is 155874193. The next prime is 155874259. The reversal of 155874240 is 42478551.

155874240 is a `hidden beast` number, since 155 + 87 + 424 + 0 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 155874195 and 155874204.

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, 381 + ... + 17660.

Almost surely, 2^155874240 is an apocalyptic number.

155874240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155874240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (274960080).

155874240 is an abundant number, since it is smaller than the sum of its proper divisors (394045920).

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

155874240 is a wasteful number, since it uses less digits than its factorization.

155874240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18067 (or 18051 counting only the distinct ones).

The product of its (nonzero) digits is 44800, while the sum is 36.

The square root of 155874240 is about 12484.9605526009. The cubic root of 155874240 is about 538.1765657344.

The spelling of 155874240 in words is "one hundred fifty-five million, eight hundred seventy-four thousand, two hundred forty".