45987220 has 24 divisors (see below), whose sum is σ = 101656800. Its totient is φ = 17426592.

The previous prime is 45987203. The next prime is 45987223. The reversal of 45987220 is 2278954.

It is a super-2 number, since 2×45987220² = 4229648806656800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 45987220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45987223) 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, 60130 + ... + 60889.

It is an arithmetic number, because the mean of its divisors is an integer number (4235700).

Almost surely, 2^45987220 is an apocalyptic number.

It is an amenable number.

45987220 is an abundant number, since it is smaller than the sum of its proper divisors (55669580).

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

45987220 is a wasteful number, since it uses less digits than its factorization.

45987220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121047 (or 121045 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 45987220 is about 6781.3877635776. The cubic root of 45987220 is about 358.2716018892.

The spelling of 45987220 in words is "forty-five million, nine hundred eighty-seven thousand, two hundred twenty".