90307002 has 16 divisors (see below), whose sum is σ = 180716832. Its totient is φ = 30085200.

The previous prime is 90306977. The next prime is 90307003. The reversal of 90307002 is 20070309.

It is a super-2 number, since 2×90307002² = 16310709220456008, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 90307002.

It is not an unprimeable number, because it can be changed into a prime (90307003) 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, 11752 + ... + 17852.

It is an arithmetic number, because the mean of its divisors is an integer number (11294802).

Almost surely, 2^90307002 is an apocalyptic number.

90307002 is an abundant number, since it is smaller than the sum of its proper divisors (90409830).

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

90307002 is a wasteful number, since it uses less digits than its factorization.

90307002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8573.

The product of its (nonzero) digits is 378, while the sum is 21.

The square root of 90307002 is about 9502.9996316952. Note that the first 3 decimals coincide. The cubic root of 90307002 is about 448.6494520008.

The spelling of 90307002 in words is "ninety million, three hundred seven thousand, two".