40297332 has 24 divisors (see below), whose sum is σ = 95570272. Its totient is φ = 13212000.

The previous prime is 40297319. The next prime is 40297333. The reversal of 40297332 is 23379204.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 40297332.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40297333) 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, 26794 + ... + 28257.

Almost surely, 2^40297332 is an apocalyptic number.

It is an amenable number.

40297332 is an abundant number, since it is smaller than the sum of its proper divisors (55272940).

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

40297332 is a wasteful number, since it uses less digits than its factorization.

40297332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55119 (or 55117 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 30.

The square root of 40297332 is about 6348.0179583867. The cubic root of 40297332 is about 342.8404826230.

The spelling of 40297332 in words is "forty million, two hundred ninety-seven thousand, three hundred thirty-two".