11280988 has 12 divisors (see below), whose sum is σ = 19765480. Its totient is φ = 5633712.

The previous prime is 11280953. The next prime is 11280989. The reversal of 11280988 is 88908211.

It is a super-2 number, since 2×11280988² = 254521380512288, which contains 22 as substring.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11280989) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4870 + ... + 6802.

Almost surely, 2^11280988 is an apocalyptic number.

It is an amenable number.

11280988 is a deficient number, since it is larger than the sum of its proper divisors (8484492).

11280988 is a wasteful number, since it uses less digits than its factorization.

11280988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3396 (or 3394 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 37.

The square root of 11280988 is about 3358.7182078882. The cubic root of 11280988 is about 224.2757817130.

The spelling of 11280988 in words is "eleven million, two hundred eighty thousand, nine hundred eighty-eight".