128972410 has 24 divisors (see below), whose sum is σ = 270053460. Its totient is φ = 44218944.

The previous prime is 128972359. The next prime is 128972419. The reversal of 128972410 is 14279821.

It can be written as a sum of positive squares in 2 ways, for example, as 121859521 + 7112889 = 11039^2 + 2667^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128972419) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 131115 + ... + 132094.

Almost surely, 2^128972410 is an apocalyptic number.

128972410 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128972410 is an abundant number, since it is smaller than the sum of its proper divisors (141081050).

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

128972410 is a wasteful number, since it uses less digits than its factorization.

128972410 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263230 (or 263223 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 128972410 is about 11356.6020446258. The cubic root of 128972410 is about 505.2414099188.

The spelling of 128972410 in words is "one hundred twenty-eight million, nine hundred seventy-two thousand, four hundred ten".