45660240 has 80 divisors (see below), whose sum is σ = 157281600. Its totient is φ = 12175488.

The previous prime is 45660229. The next prime is 45660253. The reversal of 45660240 is 4206654.

It is a happy number.

45660240 is a `hidden beast` number, since 4 + 56 + 602 + 4 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8410 + ... + 12729.

It is an arithmetic number, because the mean of its divisors is an integer number (1966020).

Almost surely, 2^45660240 is an apocalyptic number.

45660240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

45660240 is an abundant number, since it is smaller than the sum of its proper divisors (111621360).

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

45660240 is a wasteful number, since it uses less digits than its factorization.

45660240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21161 (or 21149 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 45660240 is about 6757.2361213739. The cubic root of 45660240 is about 357.4204494783.

Adding to 45660240 its reverse (4206654), we get a palindrome (49866894).

The spelling of 45660240 in words is "forty-five million, six hundred sixty thousand, two hundred forty".