11999730 has 32 divisors (see below), whose sum is σ = 29346624. Its totient is φ = 3139136.

The previous prime is 11999723. The next prime is 11999747. The reversal of 11999730 is 3799911.

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, 2184 + ... + 5363.

It is an arithmetic number, because the mean of its divisors is an integer number (917082).

Almost surely, 2^11999730 is an apocalyptic number.

11999730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11999730 is an abundant number, since it is smaller than the sum of its proper divisors (17346894).

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

11999730 is a wasteful number, since it uses less digits than its factorization.

11999730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7610.

The product of its (nonzero) digits is 15309, while the sum is 39.

The square root of 11999730 is about 3464.0626437754. The cubic root of 11999730 is about 228.9411314264.

The spelling of 11999730 in words is "eleven million, nine hundred ninety-nine thousand, seven hundred thirty".