45821240 has 32 divisors (see below), whose sum is σ = 105295680. Its totient is φ = 17937792.

The previous prime is 45821227. The next prime is 45821249. The reversal of 45821240 is 4212854.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45821249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10307 + ... + 14066.

It is an arithmetic number, because the mean of its divisors is an integer number (3290490).

Almost surely, 2^45821240 is an apocalyptic number.

45821240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

45821240 is an abundant number, since it is smaller than the sum of its proper divisors (59474440).

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

45821240 is a wasteful number, since it uses less digits than its factorization.

45821240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24431 (or 24427 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 26.

The square root of 45821240 is about 6769.1387930814. The cubic root of 45821240 is about 357.8400500580.

The spelling of 45821240 in words is "forty-five million, eight hundred twenty-one thousand, two hundred forty".