40253436 has 36 divisors (see below), whose sum is σ = 105522872. Its totient is φ = 13417488.

The previous prime is 40253417. The next prime is 40253443. The reversal of 40253436 is 63435204.

It is a tau number, because it is divible by the number of its divisors (36).

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 11 ways as a sum of consecutive naturals, for example, 19735 + ... + 21678.

Almost surely, 2^40253436 is an apocalyptic number.

It is an amenable number.

40253436 is an abundant number, since it is smaller than the sum of its proper divisors (65269436).

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

40253436 is a wasteful number, since it uses less digits than its factorization.

40253436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41432 (or 41418 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 27.

The square root of 40253436 is about 6344.5595591814. The cubic root of 40253436 is about 342.7159516858.

The spelling of 40253436 in words is "forty million, two hundred fifty-three thousand, four hundred thirty-six".