155273620 has 24 divisors (see below), whose sum is σ = 327384288. Its totient is φ = 61860000.

The previous prime is 155273617. The next prime is 155273659. The reversal of 155273620 is 26372551.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

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, 10446 + ... + 20485.

It is an arithmetic number, because the mean of its divisors is an integer number (13641012).

Almost surely, 2^155273620 is an apocalyptic number.

155273620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155273620 is an abundant number, since it is smaller than the sum of its proper divisors (172110668).

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

155273620 is a wasteful number, since it uses less digits than its factorization.

155273620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31191 (or 31189 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 31.

The square root of 155273620 is about 12460.8835962784. The cubic root of 155273620 is about 537.4844358212.

The spelling of 155273620 in words is "one hundred fifty-five million, two hundred seventy-three thousand, six hundred twenty".