40247646 has 16 divisors (see below), whose sum is σ = 80643600. Its totient is φ = 13391168.

The previous prime is 40247639. The next prime is 40247657. The reversal of 40247646 is 64674204.

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, 2481 + ... + 9308.

It is an arithmetic number, because the mean of its divisors is an integer number (5040225).

Almost surely, 2^40247646 is an apocalyptic number.

40247646 is an abundant number, since it is smaller than the sum of its proper divisors (40395954).

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

40247646 is a wasteful number, since it uses less digits than its factorization.

40247646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12363.

The product of its (nonzero) digits is 32256, while the sum is 33.

The square root of 40247646 is about 6344.1032463225. The cubic root of 40247646 is about 342.6995189643.

The spelling of 40247646 in words is "forty million, two hundred forty-seven thousand, six hundred forty-six".