155890828 has 12 divisors (see below), whose sum is σ = 274195152. Its totient is φ = 77549360.

The previous prime is 155890811. The next prime is 155890831. The reversal of 155890828 is 828098551.

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, 98128 + ... + 99703.

It is an arithmetic number, because the mean of its divisors is an integer number (22849596).

Almost surely, 2^155890828 is an apocalyptic number.

It is an amenable number.

155890828 is a deficient number, since it is larger than the sum of its proper divisors (118304324).

155890828 is a wasteful number, since it uses less digits than its factorization.

155890828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198032 (or 198030 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 46.

The square root of 155890828 is about 12485.6248542073. The cubic root of 155890828 is about 538.1956558167.

The spelling of 155890828 in words is "one hundred fifty-five million, eight hundred ninety thousand, eight hundred twenty-eight".