40642746 has 32 divisors (see below), whose sum is σ = 84663360. Its totient is φ = 12991104.

The previous prime is 40642741. The next prime is 40642757. The reversal of 40642746 is 64724604.

It is not an unprimeable number, because it can be changed into a prime (40642741) 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, 27646 + ... + 29078.

It is an arithmetic number, because the mean of its divisors is an integer number (2645730).

Almost surely, 2^40642746 is an apocalyptic number.

40642746 is an abundant number, since it is smaller than the sum of its proper divisors (44020614).

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

40642746 is a wasteful number, since it uses less digits than its factorization.

40642746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1630.

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

The square root of 40642746 is about 6375.1663507708. The cubic root of 40642746 is about 343.8172648093.

The spelling of 40642746 in words is "forty million, six hundred forty-two thousand, seven hundred forty-six".