155214720 has 96 divisors (see below), whose sum is σ = 535995720. Its totient is φ = 41389056.

The previous prime is 155214713. The next prime is 155214739. The reversal of 155214720 is 27412551.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7714 + ... + 19233.

Almost surely, 2^155214720 is an apocalyptic number.

155214720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155214720 is an abundant number, since it is smaller than the sum of its proper divisors (380781000).

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

155214720 is a wasteful number, since it uses less digits than its factorization.

155214720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26972 (or 26957 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 27.

The square root of 155214720 is about 12458.5199763054. The cubic root of 155214720 is about 537.4164658358.

The spelling of 155214720 in words is "one hundred fifty-five million, two hundred fourteen thousand, seven hundred twenty".