97172280 has 48 divisors (see below), whose sum is σ = 315811080. Its totient is φ = 25912512.

The previous prime is 97172269. The next prime is 97172347. The reversal of 97172280 is 8227179.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 134602 + ... + 135321.

Almost surely, 2^97172280 is an apocalyptic number.

97172280 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

97172280 is an abundant number, since it is smaller than the sum of its proper divisors (218638800).

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

97172280 is a wasteful number, since it uses less digits than its factorization.

97172280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269940 (or 269933 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 36.

The square root of 97172280 is about 9857.6001136179. The cubic root of 97172280 is about 459.7419472610.

The spelling of 97172280 in words is "ninety-seven million, one hundred seventy-two thousand, two hundred eighty".