97897730 has 32 divisors (see below), whose sum is σ = 213238656. Its totient is φ = 31590144.

The previous prime is 97897727. The next prime is 97897733. The reversal of 97897730 is 3779879.

It is an interprime number because it is at equal distance from previous prime (97897727) and next prime (97897733).

It is not an unprimeable number, because it can be changed into a prime (97897733) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 39944 + ... + 42323.

It is an arithmetic number, because the mean of its divisors is an integer number (6663708).

Almost surely, 2^97897730 is an apocalyptic number.

97897730 is an abundant number, since it is smaller than the sum of its proper divisors (115340926).

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

97897730 is a wasteful number, since it uses less digits than its factorization.

97897730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82298.

The product of its (nonzero) digits is 666792, while the sum is 50.

The square root of 97897730 is about 9894.3281732516. The cubic root of 97897730 is about 460.8831960655.

The spelling of 97897730 in words is "ninety-seven million, eight hundred ninety-seven thousand, seven hundred thirty".