40252560 has 80 divisors (see below), whose sum is σ = 125396736. Its totient is φ = 10681344.

The previous prime is 40252547. The next prime is 40252561. The reversal of 40252560 is 6525204.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 40252560.

It is not an unprimeable number, because it can be changed into a prime (40252561) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 87852 + ... + 88308.

Almost surely, 2^40252560 is an apocalyptic number.

40252560 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40252560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62698368).

40252560 is an abundant number, since it is smaller than the sum of its proper divisors (85144176).

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

40252560 is a wasteful number, since it uses less digits than its factorization.

40252560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 840 (or 834 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 40252560 is about 6344.4905232808. The cubic root of 40252560 is about 342.7134655929.

Adding to 40252560 its reverse (6525204), we get a palindrome (46777764).

The spelling of 40252560 in words is "forty million, two hundred fifty-two thousand, five hundred sixty".