97722788 has 12 divisors (see below), whose sum is σ = 176531712. Its totient is φ = 47285160.

The previous prime is 97722787. The next prime is 97722799. The reversal of 97722788 is 88722779.

It is not an unprimeable number, because it can be changed into a prime (97722787) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 393920 + ... + 394167.

It is an arithmetic number, because the mean of its divisors is an integer number (14710976).

Almost surely, 2^97722788 is an apocalyptic number.

It is an amenable number.

97722788 is a deficient number, since it is larger than the sum of its proper divisors (78808924).

97722788 is a wasteful number, since it uses less digits than its factorization.

97722788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 788122 (or 788120 counting only the distinct ones).

The product of its digits is 790272, while the sum is 50.

The square root of 97722788 is about 9885.4837008616. The cubic root of 97722788 is about 460.6085015695.

Subtracting from 97722788 its reverse (88722779), we obtain a palindrome (9000009).

The spelling of 97722788 in words is "ninety-seven million, seven hundred twenty-two thousand, seven hundred eighty-eight".