11639426 has 16 divisors (see below), whose sum is σ = 18292608. Its totient is φ = 5544000.

The previous prime is 11639417. The next prime is 11639429. The reversal of 11639426 is 62493611.

It is a junction number, because it is equal to n+sod(n) for n = 11639392 and 11639401.

It is not an unprimeable number, because it can be changed into a prime (11639429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18131 + ... + 18761.

It is an arithmetic number, because the mean of its divisors is an integer number (1143288).

Almost surely, 2^11639426 is an apocalyptic number.

11639426 is a deficient number, since it is larger than the sum of its proper divisors (6653182).

11639426 is a wasteful number, since it uses less digits than its factorization.

11639426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1057.

The product of its digits is 7776, while the sum is 32.

The square root of 11639426 is about 3411.6602996195. The cubic root of 11639426 is about 226.6264110556.

The spelling of 11639426 in words is "eleven million, six hundred thirty-nine thousand, four hundred twenty-six".