7220472 has 32 divisors (see below), whose sum is σ = 20630400. Its totient is φ = 2062944.

The previous prime is 7220453. The next prime is 7220483. The reversal of 7220472 is 2740227.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21322 + ... + 21657.

It is an arithmetic number, because the mean of its divisors is an integer number (644700).

Almost surely, 2^7220472 is an apocalyptic number.

It is an amenable number.

7220472 is an abundant number, since it is smaller than the sum of its proper divisors (13409928).

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

7220472 is a wasteful number, since it uses less digits than its factorization.

7220472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42995 (or 42991 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 24.

The square root of 7220472 is about 2687.0935971789. The cubic root of 7220472 is about 193.2807176148.

Adding to 7220472 its reverse (2740227), we get a palindrome (9960699).

The spelling of 7220472 in words is "seven million, two hundred twenty thousand, four hundred seventy-two".