45871640 has 16 divisors (see below), whose sum is σ = 103211280. Its totient is φ = 18348640.

The previous prime is 45871621. The next prime is 45871663. The reversal of 45871640 is 4617854.

It is a self number, because there is not a number n which added to its sum of digits gives 45871640.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 573356 + ... + 573435.

It is an arithmetic number, because the mean of its divisors is an integer number (6450705).

Almost surely, 2^45871640 is an apocalyptic number.

45871640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

45871640 is an abundant number, since it is smaller than the sum of its proper divisors (57339640).

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

45871640 is a wasteful number, since it uses less digits than its factorization.

45871640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1146802 (or 1146798 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 35.

The square root of 45871640 is about 6772.8605478040. The cubic root of 45871640 is about 357.9712012455.

The spelling of 45871640 in words is "forty-five million, eight hundred seventy-one thousand, six hundred forty".