97744140 has 72 divisors (see below), whose sum is σ = 319305168. Its totient is φ = 24059520.

The previous prime is 97744103. The next prime is 97744177. The reversal of 97744140 is 4144779.

It is an interprime number because it is at equal distance from previous prime (97744103) and next prime (97744177).

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

It is a junction number, because it is equal to n+sod(n) for n = 97744095 and 97744104.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18546 + ... + 23225.

It is an arithmetic number, because the mean of its divisors is an integer number (4434794).

Almost surely, 2^97744140 is an apocalyptic number.

97744140 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

97744140 is an abundant number, since it is smaller than the sum of its proper divisors (221561028).

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

97744140 is a wasteful number, since it uses less digits than its factorization.

97744140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41799 (or 41794 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

The square root of 97744140 is about 9886.5636092628. The cubic root of 97744140 is about 460.6420461048.

The spelling of 97744140 in words is "ninety-seven million, seven hundred forty-four thousand, one hundred forty".