4518972 has 18 divisors (see below), whose sum is σ = 11423048. Its totient is φ = 1506312.

The previous prime is 4518967. The next prime is 4518989. The reversal of 4518972 is 2798154.

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×4518972² = 40842215873568, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 125527 = 4518972 / (4 + 5 + 1 + 8 + 9 + 7 + 2).

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 5 ways as a sum of consecutive naturals, for example, 62728 + ... + 62799.

Almost surely, 2^4518972 is an apocalyptic number.

It is an amenable number.

4518972 is an abundant number, since it is smaller than the sum of its proper divisors (6904076).

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

4518972 is a wasteful number, since it uses less digits than its factorization.

4518972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125537 (or 125532 counting only the distinct ones).

The product of its digits is 20160, while the sum is 36.

The square root of 4518972 is about 2125.7873835358. The cubic root of 4518972 is about 165.3280525686.

The spelling of 4518972 in words is "four million, five hundred eighteen thousand, nine hundred seventy-two".