40494432 has 96 divisors (see below), whose sum is σ = 119798784. Its totient is φ = 11865600.

The previous prime is 40494431. The next prime is 40494449. The reversal of 40494432 is 23449404.

It is a tau number, because it is divible by the number of its divisors (96).

It is a self number, because there is not a number n which added to its sum of digits gives 40494432.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40494431) 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, 32118 + ... + 33354.

It is an arithmetic number, because the mean of its divisors is an integer number (1247904).

Almost surely, 2^40494432 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 40494432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59899392).

40494432 is an abundant number, since it is smaller than the sum of its proper divisors (79304352).

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

40494432 is a wasteful number, since it uses less digits than its factorization.

40494432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1292 (or 1284 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 30.

The square root of 40494432 is about 6363.5235522468. The cubic root of 40494432 is about 343.3985343437.

The spelling of 40494432 in words is "forty million, four hundred ninety-four thousand, four hundred thirty-two".