40253320 has 16 divisors (see below), whose sum is σ = 90570060. Its totient is φ = 16101312.

The previous prime is 40253303. The next prime is 40253347. The reversal of 40253320 is 2335204.

It can be written as a sum of positive squares in 2 ways, for example, as 36650916 + 3602404 = 6054^2 + 1898^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 503127 + ... + 503206.

Almost surely, 2^40253320 is an apocalyptic number.

40253320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40253320 is an abundant number, since it is smaller than the sum of its proper divisors (50316740).

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

40253320 is a wasteful number, since it uses less digits than its factorization.

40253320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1006344 (or 1006340 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 19.

The square root of 40253320 is about 6344.5504174843. The cubic root of 40253320 is about 342.7156224792.

Adding to 40253320 its reverse (2335204), we get a palindrome (42588524).

The spelling of 40253320 in words is "forty million, two hundred fifty-three thousand, three hundred twenty".