7428090 has 16 divisors (see below), whose sum is σ = 17827488. Its totient is φ = 1980816.

The previous prime is 7428079. The next prime is 7428119. The reversal of 7428090 is 908247.

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: 247603 = 7428090 / (7 + 4 + 2 + 8 + 0 + 9 + 0).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 123772 + ... + 123831.

It is an arithmetic number, because the mean of its divisors is an integer number (1114218).

Almost surely, 2^7428090 is an apocalyptic number.

7428090 is an abundant number, since it is smaller than the sum of its proper divisors (10399398).

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

7428090 is a wasteful number, since it uses less digits than its factorization.

7428090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247613.

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

The square root of 7428090 is about 2725.4522560485. The cubic root of 7428090 is about 195.1157760863.

The spelling of 7428090 in words is "seven million, four hundred twenty-eight thousand, ninety".