97789628 has 6 divisors (see below), whose sum is σ = 171131856. Its totient is φ = 48894812.

The previous prime is 97789621. The next prime is 97789639. The reversal of 97789628 is 82698779.

It is a super-2 number, since 2×97789628² = 19125622688756768, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97789621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12223700 + ... + 12223707.

It is an arithmetic number, because the mean of its divisors is an integer number (28521976).

Almost surely, 2^97789628 is an apocalyptic number.

It is an amenable number.

97789628 is a deficient number, since it is larger than the sum of its proper divisors (73342228).

97789628 is a wasteful number, since it uses less digits than its factorization.

97789628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24447411 (or 24447409 counting only the distinct ones).

The product of its digits is 3048192, while the sum is 56.

The square root of 97789628 is about 9888.8638376711. The cubic root of 97789628 is about 460.7134926241.

The spelling of 97789628 in words is "ninety-seven million, seven hundred eighty-nine thousand, six hundred twenty-eight".