97820724 has 48 divisors (see below), whose sum is σ = 234372096. Its totient is φ = 31740000.

The previous prime is 97820719. The next prime is 97820777. The reversal of 97820724 is 42702879.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 141219 + ... + 141909.

It is an arithmetic number, because the mean of its divisors is an integer number (4882752).

Almost surely, 2^97820724 is an apocalyptic number.

97820724 is a gapful number since it is divisible by the number (94) formed by its first and last digit.

It is an amenable number.

97820724 is an abundant number, since it is smaller than the sum of its proper divisors (136551372).

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

97820724 is a wasteful number, since it uses less digits than its factorization.

97820724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 996 (or 994 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 39.

The square root of 97820724 is about 9890.4359863456. The cubic root of 97820724 is about 460.7623213489.

The spelling of 97820724 in words is "ninety-seven million, eight hundred twenty thousand, seven hundred twenty-four".