97881012 has 72 divisors (see below), whose sum is σ = 257187840. Its totient is φ = 31354560.

The previous prime is 97880977. The next prime is 97881013. The reversal of 97881012 is 21018879.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97881013) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 255373 + ... + 255755.

Almost surely, 2^97881012 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 97881012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (128593920).

97881012 is an abundant number, since it is smaller than the sum of its proper divisors (159306828).

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

97881012 is a wasteful number, since it uses less digits than its factorization.

97881012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 653 (or 648 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 36.

The square root of 97881012 is about 9893.4833097347. The cubic root of 97881012 is about 460.8569595569.

The spelling of 97881012 in words is "ninety-seven million, eight hundred eighty-one thousand, twelve".