97239040 has 60 divisors (see below), whose sum is σ = 233563176. Its totient is φ = 38862848.

The previous prime is 97239029. The next prime is 97239041. The reversal of 97239040 is 4093279.

It is a junction number, because it is equal to n+sod(n) for n = 97238987 and 97239005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97239041) 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, 81327 + ... + 82513.

Almost surely, 2^97239040 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 97239040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (116781588).

97239040 is an abundant number, since it is smaller than the sum of its proper divisors (136324136).

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

97239040 is an equidigital number, since it uses as much as digits as its factorization.

97239040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1220 (or 1194 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 97239040 is about 9860.9857519418. The cubic root of 97239040 is about 459.8472082341.

The spelling of 97239040 in words is "ninety-seven million, two hundred thirty-nine thousand, forty".