97992860 has 96 divisors (see below), whose sum is σ = 247123968. Its totient is φ = 31933440.

The previous prime is 97992859. The next prime is 97992887. The reversal of 97992860 is 6829979.

It is a super-2 number, since 2×97992860² = 19205201221959200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 97992799 and 97992808.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 290612 + ... + 290948.

It is an arithmetic number, because the mean of its divisors is an integer number (2574208).

Almost surely, 2^97992860 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 97992860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (123561984).

97992860 is an abundant number, since it is smaller than the sum of its proper divisors (149131108).

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

97992860 is a wasteful number, since it uses less digits than its factorization.

97992860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 451 (or 449 counting only the distinct ones).

The product of its (nonzero) digits is 489888, while the sum is 50.

The square root of 97992860 is about 9899.1343055845. The cubic root of 97992860 is about 461.0324321601.

It can be divided in two parts, 979 and 92860, that added together give a palindrome (93839).

The spelling of 97992860 in words is "ninety-seven million, nine hundred ninety-two thousand, eight hundred sixty".