97920210 has 16 divisors (see below), whose sum is σ = 235008576. Its totient is φ = 26112048.

The previous prime is 97920209. The next prime is 97920233. The reversal of 97920210 is 1202979.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 3264007 = 97920210 / (9 + 7 + 9 + 2 + 0 + 2 + 1 + 0).

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, 1631974 + ... + 1632033.

It is an arithmetic number, because the mean of its divisors is an integer number (14688036).

Almost surely, 2^97920210 is an apocalyptic number.

97920210 is an abundant number, since it is smaller than the sum of its proper divisors (137088366).

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

97920210 is a wasteful number, since it uses less digits than its factorization.

97920210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3264017.

The product of its (nonzero) digits is 2268, while the sum is 30.

The square root of 97920210 is about 9895.4641124103. The cubic root of 97920210 is about 460.9184705004.

The spelling of 97920210 in words is "ninety-seven million, nine hundred twenty thousand, two hundred ten".