11213790 has 64 divisors (see below), whose sum is σ = 31256064. Its totient is φ = 2521728.

The previous prime is 11213773. The next prime is 11213809. The reversal of 11213790 is 9731211.

It is a self number, because there is not a number n which added to its sum of digits gives 11213790.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13672 + ... + 14468.

It is an arithmetic number, because the mean of its divisors is an integer number (488376).

Almost surely, 2^11213790 is an apocalyptic number.

11213790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 11213790, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15628032).

11213790 is an abundant number, since it is smaller than the sum of its proper divisors (20042274).

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

11213790 is a wasteful number, since it uses less digits than its factorization.

11213790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 881.

The product of its (nonzero) digits is 378, while the sum is 24.

The square root of 11213790 is about 3348.6997476633. The cubic root of 11213790 is about 223.8295764726.

The spelling of 11213790 in words is "eleven million, two hundred thirteen thousand, seven hundred ninety".