128372680 has 16 divisors (see below), whose sum is σ = 288838620. Its totient is φ = 51349056.

The previous prime is 128372677. The next prime is 128372687. The reversal of 128372680 is 86273821.

It can be written as a sum of positive squares in 2 ways, for example, as 127193284 + 1179396 = 11278^2 + 1086^2 .

It is not an unprimeable number, because it can be changed into a prime (128372687) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1604619 + ... + 1604698.

Almost surely, 2^128372680 is an apocalyptic number.

128372680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128372680 is an abundant number, since it is smaller than the sum of its proper divisors (160465940).

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

128372680 is a wasteful number, since it uses less digits than its factorization.

128372680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3209328 (or 3209324 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 128372680 is about 11330.1668125408. The cubic root of 128372680 is about 504.4570578820.

The spelling of 128372680 in words is "one hundred twenty-eight million, three hundred seventy-two thousand, six hundred eighty".