40402450 has 24 divisors (see below), whose sum is σ = 81981360. Its totient is φ = 14691600.

The previous prime is 40402447. The next prime is 40402459. The reversal of 40402450 is 5420404.

It is not an unprimeable number, because it can be changed into a prime (40402459) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36180 + ... + 37279.

It is an arithmetic number, because the mean of its divisors is an integer number (3415890).

Almost surely, 2^40402450 is an apocalyptic number.

40402450 is an abundant number, since it is smaller than the sum of its proper divisors (41578910).

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

40402450 is a wasteful number, since it uses less digits than its factorization.

40402450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73482 (or 73477 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 19.

The square root of 40402450 is about 6356.2921581689. The cubic root of 40402450 is about 343.1383304211.

Adding to 40402450 its reverse (5420404), we get a palindrome (45822854).

The spelling of 40402450 in words is "forty million, four hundred two thousand, four hundred fifty".