97019728 has 20 divisors (see below), whose sum is σ = 202435828. Its totient is φ = 44778240.

The previous prime is 97019687. The next prime is 97019737. The reversal of 97019728 is 82791079.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 52823824 + 44195904 = 7268^2 + 6648^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 233013 + ... + 233428.

Almost surely, 2^97019728 is an apocalyptic number.

It is an amenable number.

97019728 is an abundant number, since it is smaller than the sum of its proper divisors (105416100).

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

97019728 is a wasteful number, since it uses less digits than its factorization.

97019728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 466462 (or 466456 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 43.

The square root of 97019728 is about 9849.8592883350. The cubic root of 97019728 is about 459.5012363392.

It can be divided in two parts, 970197 and 28, that added together give a square (970225 = 985²).

The spelling of 97019728 in words is "ninety-seven million, nineteen thousand, seven hundred twenty-eight".