45213680 has 20 divisors (see below), whose sum is σ = 105121992. Its totient is φ = 18085440.

The previous prime is 45213631. The next prime is 45213689. The reversal of 45213680 is 8631254.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45213689) 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, 282506 + ... + 282665.

Almost surely, 2^45213680 is an apocalyptic number.

45213680 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

45213680 is an abundant number, since it is smaller than the sum of its proper divisors (59908312).

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

45213680 is a wasteful number, since it uses less digits than its factorization.

45213680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 565184 (or 565178 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 45213680 is about 6724.1118372615. Note that the first 3 decimals coincide. The cubic root of 45213680 is about 356.2514320246.

The spelling of 45213680 in words is "forty-five million, two hundred thirteen thousand, six hundred eighty".