97878408 has 64 divisors (see below), whose sum is σ = 254016000. Its totient is φ = 31395840.

The previous prime is 97878371. The next prime is 97878413. The reversal of 97878408 is 80487879.

It is a super-2 number, since 2×97878408² = 19160365505228928, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 217768 + ... + 218216.

It is an arithmetic number, because the mean of its divisors is an integer number (3969000).

Almost surely, 2^97878408 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 97878408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (127008000).

97878408 is an abundant number, since it is smaller than the sum of its proper divisors (156137592).

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

97878408 is a wasteful number, since it uses less digits than its factorization.

97878408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 782 (or 778 counting only the distinct ones).

The product of its (nonzero) digits is 903168, while the sum is 51.

The square root of 97878408 is about 9893.3517070809. The cubic root of 97878408 is about 460.8528726826.

The spelling of 97878408 in words is "ninety-seven million, eight hundred seventy-eight thousand, four hundred eight".