189620880 has 40 divisors (see below), whose sum is σ = 587825472. Its totient is φ = 50565504.

The previous prime is 189620863. The next prime is 189620897. The reversal of 189620880 is 88026981.

It is an interprime number because it is at equal distance from previous prime (189620863) and next prime (189620897).

It is a tau number, because it is divible by the number of its divisors (40).

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, 394804 + ... + 395283.

Almost surely, 2^189620880 is an apocalyptic number.

189620880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

189620880 is an abundant number, since it is smaller than the sum of its proper divisors (398204592).

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

189620880 is a wasteful number, since it uses less digits than its factorization.

189620880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 790103 (or 790097 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 42.

The square root of 189620880 is about 13770.2897573000. The cubic root of 189620880 is about 574.5070810314.

The spelling of 189620880 in words is "one hundred eighty-nine million, six hundred twenty thousand, eight hundred eighty".