155032620 has 24 divisors (see below), whose sum is σ = 434091504. Its totient is φ = 41342016.

The previous prime is 155032607. The next prime is 155032651. The reversal of 155032620 is 26230551.

155032620 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×155032620² = 48070226528128800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1291879 + ... + 1291998.

It is an arithmetic number, because the mean of its divisors is an integer number (18087146).

Almost surely, 2^155032620 is an apocalyptic number.

155032620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155032620 is an abundant number, since it is smaller than the sum of its proper divisors (279058884).

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

155032620 is a wasteful number, since it uses less digits than its factorization.

155032620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2583889 (or 2583887 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 155032620 is about 12451.2095797959. The cubic root of 155032620 is about 537.2062155129.

The spelling of 155032620 in words is "one hundred fifty-five million, thirty-two thousand, six hundred twenty".