155314720 has 192 divisors, whose sum is σ = 440899200. Its totient is φ = 51036160.

The previous prime is 155314717. The next prime is 155314741. The reversal of 155314720 is 27413551.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 867591 + ... + 867769.

It is an arithmetic number, because the mean of its divisors is an integer number (2296350).

Almost surely, 2^155314720 is an apocalyptic number.

155314720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155314720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (220449600).

155314720 is an abundant number, since it is smaller than the sum of its proper divisors (285584480).

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

155314720 is a wasteful number, since it uses less digits than its factorization.

155314720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251 (or 243 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 155314720 is about 12462.5326479011. The cubic root of 155314720 is about 537.5318546111.

The spelling of 155314720 in words is "one hundred fifty-five million, three hundred fourteen thousand, seven hundred twenty".