40253760 has 140 divisors (see below), whose sum is σ = 143281908. Its totient is φ = 10727424.

The previous prime is 40253747. The next prime is 40253783. The reversal of 40253760 is 6735204.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 8714304 + 31539456 = 2952^2 + 5616^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 25144 + ... + 26696.

Almost surely, 2^40253760 is an apocalyptic number.

40253760 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 40253760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71640954).

40253760 is an abundant number, since it is smaller than the sum of its proper divisors (103028148).

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

40253760 is a wasteful number, since it uses less digits than its factorization.

40253760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1582 (or 1563 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 27.

The square root of 40253760 is about 6344.5850928173. The cubic root of 40253760 is about 342.7168711905.

Adding to 40253760 its reverse (6735204), we get a palindrome (46988964).

The spelling of 40253760 in words is "forty million, two hundred fifty-three thousand, seven hundred sixty".