97926840 has 128 divisors (see below), whose sum is σ = 356140800. Its totient is φ = 23736960.

The previous prime is 97926839. The next prime is 97926841. The reversal of 97926840 is 4862979.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (97926839) and next prime (97926841).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97926841) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7759 + ... + 16001.

It is an arithmetic number, because the mean of its divisors is an integer number (2782350).

Almost surely, 2^97926840 is an apocalyptic number.

97926840 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 97926840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (178070400).

97926840 is an abundant number, since it is smaller than the sum of its proper divisors (258213960).

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

97926840 is a wasteful number, since it uses less digits than its factorization.

97926840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8274 (or 8264 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 97926840 is about 9895.7991087127. The cubic root of 97926840 is about 460.9288729172.

The spelling of 97926840 in words is "ninety-seven million, nine hundred twenty-six thousand, eight hundred forty".