97851924 has 18 divisors (see below), whose sum is σ = 247348010. Its totient is φ = 32617296.

The previous prime is 97851907. The next prime is 97851947. The reversal of 97851924 is 42915879.

It can be written as a sum of positive squares in only one way, i.e., 86155524 + 11696400 = 9282^2 + 3420^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a self number, because there is not a number n which added to its sum of digits gives 97851924.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1359019 + ... + 1359090.

Almost surely, 2^97851924 is an apocalyptic number.

It is an amenable number.

97851924 is an abundant number, since it is smaller than the sum of its proper divisors (149496086).

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

97851924 is a wasteful number, since it uses less digits than its factorization.

97851924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2718119 (or 2718114 counting only the distinct ones).

The product of its digits is 181440, while the sum is 45.

The square root of 97851924 is about 9892.0131419241. The cubic root of 97851924 is about 460.8113029816.

The spelling of 97851924 in words is "ninety-seven million, eight hundred fifty-one thousand, nine hundred twenty-four".