11990730 has 16 divisors (see below), whose sum is σ = 28777824. Its totient is φ = 3197520.

The previous prime is 11990723. The next prime is 11990743. The reversal of 11990730 is 3709911.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 399691 = 11990730 / (1 + 1 + 9 + 9 + 0 + 7 + 3 + 0).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 199816 + ... + 199875.

It is an arithmetic number, because the mean of its divisors is an integer number (1798614).

Almost surely, 2^11990730 is an apocalyptic number.

11990730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11990730 is an abundant number, since it is smaller than the sum of its proper divisors (16787094).

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

11990730 is a wasteful number, since it uses less digits than its factorization.

11990730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399701.

The product of its (nonzero) digits is 1701, while the sum is 30.

The square root of 11990730 is about 3462.7633473860. The cubic root of 11990730 is about 228.8838805403.

It can be divided in two parts, 11990 and 730, that added together give a triangular number (12720 = T₁₅₉).

The spelling of 11990730 in words is "eleven million, nine hundred ninety thousand, seven hundred thirty".