97991124 has 144 divisors (see below), whose sum is σ = 297443328. Its totient is φ = 24552000.

The previous prime is 97991119. The next prime is 97991137. The reversal of 97991124 is 42119979.

It is a Harshad number since it is a multiple of its sum of digits (42).

Its product of digits (40824) is a multiple of the sum of its prime factors (378).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 314929 + ... + 315239.

Almost surely, 2^97991124 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 97991124, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (148721664).

97991124 is an abundant number, since it is smaller than the sum of its proper divisors (199452204).

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

97991124 is a wasteful number, since it uses less digits than its factorization.

97991124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378 (or 365 counting only the distinct ones).

The product of its digits is 40824, while the sum is 42.

The square root of 97991124 is about 9899.0466207610. The cubic root of 97991124 is about 461.0297096589.

The spelling of 97991124 in words is "ninety-seven million, nine hundred ninety-one thousand, one hundred twenty-four".