155012880 has 160 divisors (see below), whose sum is σ = 532251648. Its totient is φ = 37004800.

The previous prime is 155012867. The next prime is 155012899. The reversal of 155012880 is 88210551.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 187027 + ... + 187853.

Almost surely, 2^155012880 is an apocalyptic number.

155012880 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 155012880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (266125824).

155012880 is an abundant number, since it is smaller than the sum of its proper divisors (377238768).

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

155012880 is a wasteful number, since it uses less digits than its factorization.

155012880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 925 (or 919 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 30.

The square root of 155012880 is about 12450.4168604911. The cubic root of 155012880 is about 537.1834140732.

It can be divided in two parts, 15501 and 2880, that added together give a palindrome (18381).

The spelling of 155012880 in words is "one hundred fifty-five million, twelve thousand, eight hundred eighty".