97951890 has 16 divisors (see below), whose sum is σ = 235084608. Its totient is φ = 26120496.

The previous prime is 97951877. The next prime is 97951891. The reversal of 97951890 is 9815979.

It is not an unprimeable number, because it can be changed into a prime (97951891) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1632502 + ... + 1632561.

It is an arithmetic number, because the mean of its divisors is an integer number (14692788).

Almost surely, 2^97951890 is an apocalyptic number.

97951890 is an abundant number, since it is smaller than the sum of its proper divisors (137132718).

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

97951890 is a wasteful number, since it uses less digits than its factorization.

97951890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3265073.

The product of its (nonzero) digits is 204120, while the sum is 48.

The square root of 97951890 is about 9897.0647163692. The cubic root of 97951890 is about 460.9681719281.

The spelling of 97951890 in words is "ninety-seven million, nine hundred fifty-one thousand, eight hundred ninety".