97128983 has 16 divisors (see below), whose sum is σ = 114984960. Its totient is φ = 80287200.

The previous prime is 97128961. The next prime is 97129001. The reversal of 97128983 is 38982179.

It is not a de Polignac number, because 97128983 - 2⁸ = 97128727 is a prime.

It is a super-2 number, since 2×97128983² = 18868078677228578, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97128943) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81653 + ... + 82833.

It is an arithmetic number, because the mean of its divisors is an integer number (7186560).

Almost surely, 2^97128983 is an apocalyptic number.

97128983 is a deficient number, since it is larger than the sum of its proper divisors (17855977).

97128983 is a wasteful number, since it uses less digits than its factorization.

97128983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1598.

The product of its digits is 217728, while the sum is 47.

The square root of 97128983 is about 9855.4037461689. The cubic root of 97128983 is about 459.6736547938.

The spelling of 97128983 in words is "ninety-seven million, one hundred twenty-eight thousand, nine hundred eighty-three".