45294640 has 20 divisors (see below), whose sum is σ = 105310224. Its totient is φ = 18117824.

The previous prime is 45294637. The next prime is 45294643. The reversal of 45294640 is 4649254.

It is an interprime number because it is at equal distance from previous prime (45294637) and next prime (45294643).

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 45294596 and 45294605.

It is not an unprimeable number, because it can be changed into a prime (45294643) 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, 283012 + ... + 283171.

Almost surely, 2^45294640 is an apocalyptic number.

45294640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

45294640 is an abundant number, since it is smaller than the sum of its proper divisors (60015584).

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

45294640 is a wasteful number, since it uses less digits than its factorization.

45294640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 566196 (or 566190 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 34.

The square root of 45294640 is about 6730.1292706753. The cubic root of 45294640 is about 356.4639408498.

The spelling of 45294640 in words is "forty-five million, two hundred ninety-four thousand, six hundred forty".