11564740 has 24 divisors (see below), whose sum is σ = 26494272. Its totient is φ = 4205280.

The previous prime is 11564723. The next prime is 11564741. The reversal of 11564740 is 4746511.

It is a super-2 number, since 2×11564740² = 267486422535200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11564699 and 11564708.

It is not an unprimeable number, because it can be changed into a prime (11564741) by changing a digit.

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, 26064 + ... + 26503.

It is an arithmetic number, because the mean of its divisors is an integer number (1103928).

Almost surely, 2^11564740 is an apocalyptic number.

11564740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11564740 is an abundant number, since it is smaller than the sum of its proper divisors (14929532).

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

11564740 is a wasteful number, since it uses less digits than its factorization.

11564740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52587 (or 52585 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 11564740 is about 3400.6969873836. The cubic root of 11564740 is about 226.1406439156.

The spelling of 11564740 in words is "eleven million, five hundred sixty-four thousand, seven hundred forty".