7222890 has 16 divisors (see below), whose sum is σ = 17335008. Its totient is φ = 1926096.

The previous prime is 7222849. The next prime is 7222903. The reversal of 7222890 is 982227.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 240763 = 7222890 / (7 + 2 + 2 + 2 + 8 + 9 + 0).

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, 120352 + ... + 120411.

It is an arithmetic number, because the mean of its divisors is an integer number (1083438).

Almost surely, 2^7222890 is an apocalyptic number.

7222890 is an abundant number, since it is smaller than the sum of its proper divisors (10112118).

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

7222890 is a wasteful number, since it uses less digits than its factorization.

7222890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240773.

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 7222890 is about 2687.5434880202. The cubic root of 7222890 is about 193.3022905635.

The spelling of 7222890 in words is "seven million, two hundred twenty-two thousand, eight hundred ninety".