97930890 has 32 divisors (see below), whose sum is σ = 261149760. Its totient is φ = 26114832.

The previous prime is 97930879. The next prime is 97930907. The reversal of 97930890 is 9803979.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 181084 + ... + 181623.

It is an arithmetic number, because the mean of its divisors is an integer number (8160930).

Almost surely, 2^97930890 is an apocalyptic number.

97930890 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

97930890 is an abundant number, since it is smaller than the sum of its proper divisors (163218870).

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

97930890 is a wasteful number, since it uses less digits than its factorization.

97930890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362723 (or 362717 counting only the distinct ones).

The product of its (nonzero) digits is 122472, while the sum is 45.

The square root of 97930890 is about 9896.0037388837. The cubic root of 97930890 is about 460.9352271036.

The spelling of 97930890 in words is "ninety-seven million, nine hundred thirty thousand, eight hundred ninety".