11927640 has 32 divisors (see below), whose sum is σ = 35783280. Its totient is φ = 3180672.

The previous prime is 11927633. The next prime is 11927683. The reversal of 11927640 is 4672911.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 11927598 and 11927607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49579 + ... + 49818.

Almost surely, 2^11927640 is an apocalyptic number.

11927640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11927640 is an abundant number, since it is smaller than the sum of its proper divisors (23855640).

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

11927640 is a wasteful number, since it uses less digits than its factorization.

11927640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99411 (or 99407 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 11927640 is about 3453.6415563865. The cubic root of 11927640 is about 228.4817453221.

It can be divided in two parts, 119276 and 40, that added together give a triangular number (119316 = T₄₈₈).

The spelling of 11927640 in words is "eleven million, nine hundred twenty-seven thousand, six hundred forty".