155604890 has 48 divisors (see below), whose sum is σ = 340008192. Its totient is φ = 51026976.

The previous prime is 155604847. The next prime is 155604907. The reversal of 155604890 is 98406551.

155604890 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4367 + ... + 18173.

It is an arithmetic number, because the mean of its divisors is an integer number (7083504).

Almost surely, 2^155604890 is an apocalyptic number.

155604890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

155604890 is an abundant number, since it is smaller than the sum of its proper divisors (184403302).

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

155604890 is a wasteful number, since it uses less digits than its factorization.

155604890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13851 (or 13844 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 38.

The square root of 155604890 is about 12474.1689101920. The cubic root of 155604890 is about 537.8663980981.

The spelling of 155604890 in words is "one hundred fifty-five million, six hundred four thousand, eight hundred ninety".