155878680 has 32 divisors (see below), whose sum is σ = 467636400. Its totient is φ = 41567616.

The previous prime is 155878663. The next prime is 155878691. The reversal of 155878680 is 86878551.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 649375 + ... + 649614.

Almost surely, 2^155878680 is an apocalyptic number.

155878680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155878680 is an abundant number, since it is smaller than the sum of its proper divisors (311757720).

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

155878680 is a wasteful number, since it uses less digits than its factorization.

155878680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1299003 (or 1298999 counting only the distinct ones).

The product of its (nonzero) digits is 537600, while the sum is 48.

The square root of 155878680 is about 12485.1383652725. The cubic root of 155878680 is about 538.1816755829.

The spelling of 155878680 in words is "one hundred fifty-five million, eight hundred seventy-eight thousand, six hundred eighty".