7422290 has 8 divisors (see below), whose sum is σ = 13360140. Its totient is φ = 2968912.

The previous prime is 7422281. The next prime is 7422301. The reversal of 7422290 is 922247.

It can be written as a sum of positive squares in 2 ways, for example, as 6754801 + 667489 = 2599^2 + 817^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 371105 + ... + 371124.

Almost surely, 2^7422290 is an apocalyptic number.

7422290 is a deficient number, since it is larger than the sum of its proper divisors (5937850).

7422290 is a wasteful number, since it uses less digits than its factorization.

7422290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 742236.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 7422290 is about 2724.3880046719. The cubic root of 7422290 is about 195.0649794404.

The spelling of 7422290 in words is "seven million, four hundred twenty-two thousand, two hundred ninety".