45857440 has 24 divisors (see below), whose sum is σ = 108338580. Its totient is φ = 18342912.

The previous prime is 45857387. The next prime is 45857447. The reversal of 45857440 is 4475854.

It can be written as a sum of positive squares in 2 ways, for example, as 37307664 + 8549776 = 6108^2 + 2924^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 45857440.

It is not an unprimeable number, because it can be changed into a prime (45857447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 143145 + ... + 143464.

Almost surely, 2^45857440 is an apocalyptic number.

45857440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

45857440 is an abundant number, since it is smaller than the sum of its proper divisors (62481140).

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

45857440 is a wasteful number, since it uses less digits than its factorization.

45857440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286624 (or 286616 counting only the distinct ones).

The product of its (nonzero) digits is 89600, while the sum is 37.

The square root of 45857440 is about 6771.8121651446. The cubic root of 45857440 is about 357.9342596431.

The spelling of 45857440 in words is "forty-five million, eight hundred fifty-seven thousand, four hundred forty".