97834640 has 40 divisors (see below), whose sum is σ = 237359808. Its totient is φ = 37431680.

The previous prime is 97834619. The next prime is 97834699. The reversal of 97834640 is 4643879.

It is a tau number, because it is divible by the number of its divisors (40).

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, 24746 + ... + 28425.

Almost surely, 2^97834640 is an apocalyptic number.

It is an amenable number.

97834640 is an abundant number, since it is smaller than the sum of its proper divisors (139525168).

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

97834640 is a wasteful number, since it uses less digits than its factorization.

97834640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53207 (or 53201 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 41.

The square root of 97834640 is about 9891.1394692422. The cubic root of 97834640 is about 460.7841696995.

The spelling of 97834640 in words is "ninety-seven million, eight hundred thirty-four thousand, six hundred forty".