11801930 has 16 divisors (see below), whose sum is σ = 24278400. Its totient is φ = 4046352.

The previous prime is 11801899. The next prime is 11801939. The reversal of 11801930 is 3910811.

It is a junction number, because it is equal to n+sod(n) for n = 11801896 and 11801905.

It is not an unprimeable number, because it can be changed into a prime (11801939) 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, 84230 + ... + 84369.

It is an arithmetic number, because the mean of its divisors is an integer number (1517400).

Almost surely, 2^11801930 is an apocalyptic number.

11801930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11801930 is an abundant number, since it is smaller than the sum of its proper divisors (12476470).

11801930 is a wasteful number, since it uses less digits than its factorization.

11801930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168613.

The product of its (nonzero) digits is 216, while the sum is 23.

The square root of 11801930 is about 3435.3937183386. The cubic root of 11801930 is about 227.6762229992.

The spelling of 11801930 in words is "eleven million, eight hundred one thousand, nine hundred thirty".