11229720 has 32 divisors (see below), whose sum is σ = 33689520. Its totient is φ = 2994560.

The previous prime is 11229697. The next prime is 11229731. The reversal of 11229720 is 2792211.

It is a super-2 number, since 2×11229720² = 252213222556800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46671 + ... + 46910.

Almost surely, 2^11229720 is an apocalyptic number.

11229720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11229720 is an abundant number, since it is smaller than the sum of its proper divisors (22459800).

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

11229720 is a wasteful number, since it uses less digits than its factorization.

11229720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93595 (or 93591 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 24.

The square root of 11229720 is about 3351.0774386755. The cubic root of 11229720 is about 223.9355150263.

The spelling of 11229720 in words is "eleven million, two hundred twenty-nine thousand, seven hundred twenty".