11920830 has 16 divisors (see below), whose sum is σ = 28610064. Its totient is φ = 3178880.

The previous prime is 11920807. The next prime is 11920837. The reversal of 11920830 is 3802911.

It is a self number, because there is not a number n which added to its sum of digits gives 11920830.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11920837) 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, 198651 + ... + 198710.

It is an arithmetic number, because the mean of its divisors is an integer number (1788129).

Almost surely, 2^11920830 is an apocalyptic number.

11920830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11920830 is an abundant number, since it is smaller than the sum of its proper divisors (16689234).

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

11920830 is a wasteful number, since it uses less digits than its factorization.

11920830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397371.

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 11920830 is about 3452.6554997567. The cubic root of 11920830 is about 228.4382537093.

The spelling of 11920830 in words is "eleven million, nine hundred twenty thousand, eight hundred thirty".