99780504 has 24 divisors (see below), whose sum is σ = 249573660. Its totient is φ = 33243856.

The previous prime is 99780491. The next prime is 99780517. The reversal of 99780504 is 40508799.

It is an interprime number because it is at equal distance from previous prime (99780491) and next prime (99780517).

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×99780504² = 19912297956988032, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 47917 + ... + 49955.

Almost surely, 2^99780504 is an apocalyptic number.

It is an amenable number.

99780504 is an abundant number, since it is smaller than the sum of its proper divisors (149793156).

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

99780504 is an equidigital number, since it uses as much as digits as its factorization.

99780504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4087 (or 2044 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 42.

The square root of 99780504 is about 9989.0191710698. The cubic root of 99780504 is about 463.8190311917.

The spelling of 99780504 in words is "ninety-nine million, seven hundred eighty thousand, five hundred four".