11921328 has 30 divisors (see below), whose sum is σ = 33363564. Its totient is φ = 3973728.

The previous prime is 11921317. The next prime is 11921339. The reversal of 11921328 is 82312911.

It is an interprime number because it is at equal distance from previous prime (11921317) and next prime (11921339).

It is a super-2 number, since 2×11921328² = 284236122567168, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 41250 + ... + 41537.

Almost surely, 2^11921328 is an apocalyptic number.

11921328 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

11921328 is an abundant number, since it is smaller than the sum of its proper divisors (21442236).

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

11921328 is a wasteful number, since it uses less digits than its factorization.

11921328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82801 (or 82792 counting only the distinct ones).

The product of its digits is 864, while the sum is 27.

The square root of 11921328 is about 3452.7276174063. The cubic root of 11921328 is about 228.4414347145.

The spelling of 11921328 in words is "eleven million, nine hundred twenty-one thousand, three hundred twenty-eight".