99215040 has 56 divisors (see below), whose sum is σ = 315010800. Its totient is φ = 26457088.

The previous prime is 99215033. The next prime is 99215041. The reversal of 99215040 is 4051299.

It is a happy number.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 99214989 and 99215007.

It is not an unprimeable number, because it can be changed into a prime (99215041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50715 + ... + 52634.

Almost surely, 2^99215040 is an apocalyptic number.

It is an amenable number.

99215040 is an abundant number, since it is smaller than the sum of its proper divisors (215795760).

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

99215040 is a wasteful number, since it uses less digits than its factorization.

99215040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103369 (or 103359 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 99215040 is about 9960.6746759444. The cubic root of 99215040 is about 462.9412044940.

The spelling of 99215040 in words is "ninety-nine million, two hundred fifteen thousand, forty".