40642896 has 80 divisors (see below), whose sum is σ = 121710464. Its totient is φ = 11446272.

The previous prime is 40642883. The next prime is 40642933. The reversal of 40642896 is 69824604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23700 + ... + 25356.

Almost surely, 2^40642896 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40642896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60855232).

40642896 is an abundant number, since it is smaller than the sum of its proper divisors (81067568).

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

40642896 is a wasteful number, since it uses less digits than its factorization.

40642896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1748 (or 1742 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 39.

The square root of 40642896 is about 6375.1781151588. The cubic root of 40642896 is about 343.8176877837.

The spelling of 40642896 in words is "forty million, six hundred forty-two thousand, eight hundred ninety-six".