99996520 has 64 divisors (see below), whose sum is σ = 244782720. Its totient is φ = 36543744.

The previous prime is 99996517. The next prime is 99996521. The reversal of 99996520 is 2569999.

It is a super-2 number, since 2×99996520² = 19998608024220800, which contains 22 as substring.

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (99996521) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52627 + ... + 54493.

It is an arithmetic number, because the mean of its divisors is an integer number (3824730).

Almost surely, 2^99996520 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99996520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (122391360).

99996520 is an abundant number, since it is smaller than the sum of its proper divisors (144786200).

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

99996520 is a wasteful number, since it uses less digits than its factorization.

99996520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1994 (or 1990 counting only the distinct ones).

The product of its (nonzero) digits is 393660, while the sum is 49.

The square root of 99996520 is about 9999.8259984862. The cubic root of 99996520 is about 464.1534990558.

The spelling of 99996520 in words is "ninety-nine million, nine hundred ninety-six thousand, five hundred twenty".