11537988 has 48 divisors (see below), whose sum is σ = 33567744. Its totient is φ = 2996640.

The previous prime is 11537987. The next prime is 11537989. The reversal of 11537988 is 88973511.

It is an interprime number because it is at equal distance from previous prime (11537987) and next prime (11537989).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (11537987) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5320 + ... + 7167.

It is an arithmetic number, because the mean of its divisors is an integer number (699328).

Almost surely, 2^11537988 is an apocalyptic number.

It is an amenable number.

11537988 is an abundant number, since it is smaller than the sum of its proper divisors (22029756).

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

11537988 is a wasteful number, since it uses less digits than its factorization.

11537988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12512 (or 12510 counting only the distinct ones).

The product of its digits is 60480, while the sum is 42.

The square root of 11537988 is about 3396.7613987444. The cubic root of 11537988 is about 225.9661368847.

The spelling of 11537988 in words is "eleven million, five hundred thirty-seven thousand, nine hundred eighty-eight".