97212400 has 30 divisors (see below), whose sum is σ = 233553752. Its totient is φ = 38884800.

The previous prime is 97212371. The next prime is 97212433. The reversal of 97212400 is 421279.

It is a Harshad number since it is a multiple of its sum of digits (25).

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, 121116 + ... + 121915.

Almost surely, 2^97212400 is an apocalyptic number.

It is an amenable number.

97212400 is an abundant number, since it is smaller than the sum of its proper divisors (136341352).

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

97212400 is a wasteful number, since it uses less digits than its factorization.

97212400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243049 (or 243038 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 97212400 is about 9859.6348816779. The cubic root of 97212400 is about 459.8052105327.

Adding to 97212400 its reverse (421279), we get a palindrome (97633679).

It can be divided in two parts, 9721 and 2400, that added together give a palindrome (12121).

The spelling of 97212400 in words is "ninety-seven million, two hundred twelve thousand, four hundred".