155380680 has 640 divisors, whose sum is σ = 702535680. Its totient is φ = 29859840.

The previous prime is 155380679. The next prime is 155380691. The reversal of 155380680 is 86083551.

It is a Harshad number since it is a multiple of its sum of digits (36).

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 159 ways as a sum of consecutive naturals, for example, 5012265 + ... + 5012295.

It is an arithmetic number, because the mean of its divisors is an integer number (1097712).

Almost surely, 2^155380680 is an apocalyptic number.

155380680 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 155380680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (351267840).

155380680 is an abundant number, since it is smaller than the sum of its proper divisors (547155000).

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

155380680 is a wasteful number, since it uses less digits than its factorization.

155380680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91 (or 78 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The square root of 155380680 is about 12465.1786990801. The cubic root of 155380680 is about 537.6079379408.

The spelling of 155380680 in words is "one hundred fifty-five million, three hundred eighty thousand, six hundred eighty".