97109880 has 128 divisors (see below), whose sum is σ = 335232000. Its totient is φ = 22044672.

The previous prime is 97109879. The next prime is 97109911. The reversal of 97109880 is 8890179.

It is a super-2 number, since 2×97109880² = 18860657587228800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

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, 161821 + ... + 162419.

It is an arithmetic number, because the mean of its divisors is an integer number (2619000).

Almost surely, 2^97109880 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 97109880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (167616000).

97109880 is an abundant number, since it is smaller than the sum of its proper divisors (238122120).

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

97109880 is a wasteful number, since it uses less digits than its factorization.

97109880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 813 (or 809 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 42.

The square root of 97109880 is about 9854.4345347666. The cubic root of 97109880 is about 459.6435171311.

The spelling of 97109880 in words is "ninety-seven million, one hundred nine thousand, eight hundred eighty".