97021824 has 64 divisors (see below), whose sum is σ = 258867840. Its totient is φ = 32196096.

The previous prime is 97021801. The next prime is 97021831. The reversal of 97021824 is 42812079.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117477 + ... + 118299.

It is an arithmetic number, because the mean of its divisors is an integer number (4044810).

Almost surely, 2^97021824 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 97021824, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (129433920).

97021824 is an abundant number, since it is smaller than the sum of its proper divisors (161846016).

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

97021824 is a wasteful number, since it uses less digits than its factorization.

97021824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1147 (or 1135 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 97021824 is about 9849.9656852194. The cubic root of 97021824 is about 459.5045453145.

The spelling of 97021824 in words is "ninety-seven million, twenty-one thousand, eight hundred twenty-four".