155310720 has 128 divisors (see below), whose sum is σ = 516723840. Its totient is φ = 39604224.

The previous prime is 155310709. The next prime is 155310773. The reversal of 155310720 is 27013551.

155310720 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42402 + ... + 45918.

It is an arithmetic number, because the mean of its divisors is an integer number (4036905).

Almost surely, 2^155310720 is an apocalyptic number.

155310720 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 155310720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (258361920).

155310720 is an abundant number, since it is smaller than the sum of its proper divisors (361413120).

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

155310720 is a wasteful number, since it uses less digits than its factorization.

155310720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3562 (or 3550 counting only the distinct ones).

The product of its (nonzero) digits is 1050, while the sum is 24.

The square root of 155310720 is about 12462.3721658439. The cubic root of 155310720 is about 537.5272400112.

The spelling of 155310720 in words is "one hundred fifty-five million, three hundred ten thousand, seven hundred twenty".