97881036 has 96 divisors (see below), whose sum is σ = 269111808. Its totient is φ = 27356160.

The previous prime is 97881013. The next prime is 97881071. The reversal of 97881036 is 63018879.

97881036 is a nontrivial binomial coefficient, being equal to C(13992, 2).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 118521 + ... + 119343.

It is an arithmetic number, because the mean of its divisors is an integer number (2803248).

Almost surely, 2^97881036 is an apocalyptic number.

97881036 is the 13991-st triangular number and also the 6996-th hexagonal number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 97881036, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (134555904).

97881036 is an abundant number, since it is smaller than the sum of its proper divisors (171230772).

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

97881036 is a wasteful number, since it uses less digits than its factorization.

97881036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 911 (or 909 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 42.

The square root of 97881036 is about 9893.4845226543. The cubic root of 97881036 is about 460.8569972236.

The spelling of 97881036 in words is "ninety-seven million, eight hundred eighty-one thousand, thirty-six".