155824140 has 48 divisors (see below), whose sum is σ = 437078880. Its totient is φ = 41479680.

The previous prime is 155824087. The next prime is 155824153. The reversal of 155824140 is 41428551.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 155824098 and 155824107.

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, 37696 + ... + 41624.

It is an arithmetic number, because the mean of its divisors is an integer number (9105810).

Almost surely, 2^155824140 is an apocalyptic number.

155824140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155824140 is an abundant number, since it is smaller than the sum of its proper divisors (281254740).

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

155824140 is a wasteful number, since it uses less digits than its factorization.

155824140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4602 (or 4600 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 30.

The square root of 155824140 is about 12482.9539773244. The cubic root of 155824140 is about 538.1189005825.

The spelling of 155824140 in words is "one hundred fifty-five million, eight hundred twenty-four thousand, one hundred forty".