45136440 has 80 divisors (see below), whose sum is σ = 151719480. Its totient is φ = 12035520.

The previous prime is 45136433. The next prime is 45136451. The reversal of 45136440 is 4463154.

45136440 is a `hidden beast` number, since 4 + 5 + 13 + 644 + 0 = 666.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

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, 3726 + ... + 10205.

Almost surely, 2^45136440 is an apocalyptic number.

45136440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

45136440 is an abundant number, since it is smaller than the sum of its proper divisors (106583040).

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

45136440 is a wasteful number, since it uses less digits than its factorization.

45136440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13954 (or 13941 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 45136440 is about 6718.3658727402. The cubic root of 45136440 is about 356.0484510919.

Adding to 45136440 its reverse (4463154), we get a palindrome (49599594).

The spelling of 45136440 in words is "forty-five million, one hundred thirty-six thousand, four hundred forty".