11897992 has 16 divisors (see below), whose sum is σ = 23279040. Its totient is φ = 5690256.

The previous prime is 11897957. The next prime is 11897993. The reversal of 11897992 is 29979811.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is not an unprimeable number, because it can be changed into a prime (11897993) 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, 32148 + ... + 32515.

It is an arithmetic number, because the mean of its divisors is an integer number (1454940).

Almost surely, 2^11897992 is an apocalyptic number.

It is an amenable number.

11897992 is a deficient number, since it is larger than the sum of its proper divisors (11381048).

11897992 is a wasteful number, since it uses less digits than its factorization.

11897992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64692 (or 64688 counting only the distinct ones).

The product of its digits is 81648, while the sum is 46.

The square root of 11897992 is about 3449.3466047934. The cubic root of 11897992 is about 228.2922793092.

The spelling of 11897992 in words is "eleven million, eight hundred ninety-seven thousand, nine hundred ninety-two".