97278490 has 16 divisors (see below), whose sum is σ = 177212448. Its totient is φ = 38442256.

The previous prime is 97278481. The next prime is 97278521. The reversal of 97278490 is 9487279.

It is a self number, because there is not a number n which added to its sum of digits gives 97278490.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57772 + ... + 59431.

It is an arithmetic number, because the mean of its divisors is an integer number (11075778).

Almost surely, 2^97278490 is an apocalyptic number.

97278490 is a deficient number, since it is larger than the sum of its proper divisors (79933958).

97278490 is a wasteful number, since it uses less digits than its factorization.

97278490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117293.

The product of its (nonzero) digits is 254016, while the sum is 46.

The square root of 97278490 is about 9862.9858562202. The cubic root of 97278490 is about 459.9093866885.

The spelling of 97278490 in words is "ninety-seven million, two hundred seventy-eight thousand, four hundred ninety".