97716228 has 12 divisors (see below), whose sum is σ = 228004560. Its totient is φ = 32572072.

The previous prime is 97716193. The next prime is 97716233. The reversal of 97716228 is 82261779.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×97716228² = 19096922429095968, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 97716228.

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, 4071498 + ... + 4071521.

It is an arithmetic number, because the mean of its divisors is an integer number (19000380).

Almost surely, 2^97716228 is an apocalyptic number.

It is an amenable number.

97716228 is an abundant number, since it is smaller than the sum of its proper divisors (130288332).

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

97716228 is a wasteful number, since it uses less digits than its factorization.

97716228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8143026 (or 8143024 counting only the distinct ones).

The product of its digits is 84672, while the sum is 42.

The square root of 97716228 is about 9885.1518956463. The cubic root of 97716228 is about 460.5981946614.

It can be divided in two parts, 977 and 16228, that added together give a triangular number (17205 = T₁₈₅).

The spelling of 97716228 in words is "ninety-seven million, seven hundred sixteen thousand, two hundred twenty-eight".