97722538 has 8 divisors (see below), whose sum is σ = 152957088. Its totient is φ = 46736844.

The previous prime is 97722523. The next prime is 97722539. The reversal of 97722538 is 83522779.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×97722538² = 19099388866322888, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 97722494 and 97722503.

It is not an unprimeable number, because it can be changed into a prime (97722539) 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, 1062156 + ... + 1062247.

It is an arithmetic number, because the mean of its divisors is an integer number (19119636).

Almost surely, 2^97722538 is an apocalyptic number.

97722538 is a deficient number, since it is larger than the sum of its proper divisors (55234550).

97722538 is a wasteful number, since it uses less digits than its factorization.

97722538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2124428.

The product of its digits is 211680, while the sum is 43.

The square root of 97722538 is about 9885.4710560499. The cubic root of 97722538 is about 460.6081087842.

The spelling of 97722538 in words is "ninety-seven million, seven hundred twenty-two thousand, five hundred thirty-eight".