11802990 has 32 divisors (see below), whose sum is σ = 29819520. Its totient is φ = 2981664.

The previous prime is 11802977. The next prime is 11802991. The reversal of 11802990 is 9920811.

11802990 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11802991) 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, 9784 + ... + 10923.

It is an arithmetic number, because the mean of its divisors is an integer number (931860).

Almost surely, 2^11802990 is an apocalyptic number.

11802990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11802990 is an abundant number, since it is smaller than the sum of its proper divisors (18016530).

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

11802990 is a wasteful number, since it uses less digits than its factorization.

11802990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20736.

The product of its (nonzero) digits is 1296, while the sum is 30.

The square root of 11802990 is about 3435.5479912235. The cubic root of 11802990 is about 227.6830391039.

The spelling of 11802990 in words is "eleven million, eight hundred two thousand, nine hundred ninety".