155904838 has 8 divisors (see below), whose sum is σ = 233933832. Its totient is φ = 77926896.

The previous prime is 155904769. The next prime is 155904851. The reversal of 155904838 is 838409551.

155904838 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 155904794 and 155904803.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3895 + ... + 18082.

It is an arithmetic number, because the mean of its divisors is an integer number (29241729).

Almost surely, 2^155904838 is an apocalyptic number.

155904838 is a deficient number, since it is larger than the sum of its proper divisors (78028994).

155904838 is a wasteful number, since it uses less digits than its factorization.

155904838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25526.

The product of its (nonzero) digits is 172800, while the sum is 43.

The square root of 155904838 is about 12486.1858868111. The cubic root of 155904838 is about 538.2117779867.

The spelling of 155904838 in words is "one hundred fifty-five million, nine hundred four thousand, eight hundred thirty-eight".