45526640 has 20 divisors (see below), whose sum is σ = 105849624. Its totient is φ = 18210624.

The previous prime is 45526639. The next prime is 45526643. The reversal of 45526640 is 4662554.

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 = 45526597 and 45526606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45526643) 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, 284462 + ... + 284621.

Almost surely, 2^45526640 is an apocalyptic number.

45526640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

45526640 is an abundant number, since it is smaller than the sum of its proper divisors (60322984).

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

45526640 is a wasteful number, since it uses less digits than its factorization.

45526640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 569096 (or 569090 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 32.

The square root of 45526640 is about 6747.3431808379. The cubic root of 45526640 is about 357.0715097096.

The spelling of 45526640 in words is "forty-five million, five hundred twenty-six thousand, six hundred forty".