11817480 has 32 divisors (see below), whose sum is σ = 35452800. Its totient is φ = 3151296.

The previous prime is 11817461. The next prime is 11817493. The reversal of 11817480 is 8471811.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 49120 + ... + 49359.

It is an arithmetic number, because the mean of its divisors is an integer number (1107900).

Almost surely, 2^11817480 is an apocalyptic number.

11817480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11817480 is an abundant number, since it is smaller than the sum of its proper divisors (23635320).

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

11817480 is a wasteful number, since it uses less digits than its factorization.

11817480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98493 (or 98489 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 30.

The square root of 11817480 is about 3437.6561782703. The cubic root of 11817480 is about 227.7761730779.

The spelling of 11817480 in words is "eleven million, eight hundred seventeen thousand, four hundred eighty".