36309990 has 32 divisors (see below), whose sum is σ = 89957376. Its totient is φ = 9370080.

The previous prime is 36309989. The next prime is 36310003. The reversal of 36309990 is 9990363.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18592 + ... + 20451.

It is an arithmetic number, because the mean of its divisors is an integer number (2811168).

Almost surely, 2^36309990 is an apocalyptic number.

36309990 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

36309990 is an abundant number, since it is smaller than the sum of its proper divisors (53647386).

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

36309990 is a wasteful number, since it uses less digits than its factorization.

36309990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39084.

The product of its (nonzero) digits is 39366, while the sum is 39.

The square root of 36309990 is about 6025.7771283047. Note that the first 3 decimals coincide. The cubic root of 36309990 is about 331.1377623782.

The spelling of 36309990 in words is "thirty-six million, three hundred nine thousand, nine hundred ninety".