40253680 has 80 divisors (see below), whose sum is σ = 98993664. Its totient is φ = 15192320.

The previous prime is 40253627. The next prime is 40253687. The reversal of 40253680 is 8635204.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40253687) 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, 240957 + ... + 241123.

Almost surely, 2^40253680 is an apocalyptic number.

40253680 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 40253680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49496832).

40253680 is an abundant number, since it is smaller than the sum of its proper divisors (58739984).

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

40253680 is a wasteful number, since it uses less digits than its factorization.

40253680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334 (or 328 counting only the distinct ones).

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

The square root of 40253680 is about 6344.5787882254. The cubic root of 40253680 is about 342.7166441528.

Adding to 40253680 its reverse (8635204), we get a palindrome (48888884).

The spelling of 40253680 in words is "forty million, two hundred fifty-three thousand, six hundred eighty".