40252492 has 48 divisors (see below), whose sum is σ = 83543040. Its totient is φ = 16612992.

The previous prime is 40252483. The next prime is 40252517. The reversal of 40252492 is 29425204.

It is a super-2 number, since 2×40252492² = 3240526224420128, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 40252492.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 95859 + ... + 96277.

It is an arithmetic number, because the mean of its divisors is an integer number (1740480).

Almost surely, 2^40252492 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 40252492, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41771520).

40252492 is an abundant number, since it is smaller than the sum of its proper divisors (43290548).

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

40252492 is a wasteful number, since it uses less digits than its factorization.

40252492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 550 (or 548 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 40252492 is about 6344.4851642982. The cubic root of 40252492 is about 342.7132726070.

Adding to 40252492 its reverse (29425204), we get a palindrome (69677696).

The spelling of 40252492 in words is "forty million, two hundred fifty-two thousand, four hundred ninety-two".