97823988 has 36 divisors (see below), whose sum is σ = 249176928. Its totient is φ = 32357520.

The previous prime is 97823983. The next prime is 97823993. The reversal of 97823988 is 88932879.

It is an interprime number because it is at equal distance from previous prime (97823983) and next prime (97823993).

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97823983) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5656 + ... + 15087.

Almost surely, 2^97823988 is an apocalyptic number.

It is an amenable number.

97823988 is an abundant number, since it is smaller than the sum of its proper divisors (151352940).

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

97823988 is a wasteful number, since it uses less digits than its factorization.

97823988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20884 (or 20879 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 54.

The square root of 97823988 is about 9890.6009928619. The cubic root of 97823988 is about 460.7674460690.

The spelling of 97823988 in words is "ninety-seven million, eight hundred twenty-three thousand, nine hundred eighty-eight".