40403740 has 24 divisors (see below), whose sum is σ = 91375200. Its totient is φ = 14918208.

The previous prime is 40403719. The next prime is 40403743. The reversal of 40403740 is 4730404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40403743) 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, 77440 + ... + 77959.

It is an arithmetic number, because the mean of its divisors is an integer number (3807300).

Almost surely, 2^40403740 is an apocalyptic number.

It is an amenable number.

40403740 is an abundant number, since it is smaller than the sum of its proper divisors (50971460).

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

40403740 is a wasteful number, since it uses less digits than its factorization.

40403740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155421 (or 155419 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 22.

The square root of 40403740 is about 6356.3936316122. The cubic root of 40403740 is about 343.1419823756.

The spelling of 40403740 in words is "forty million, four hundred three thousand, seven hundred forty".