7443090 has 56 divisors (see below), whose sum is σ = 20106828. Its totient is φ = 1982880.

The previous prime is 7443083. The next prime is 7443091. The reversal of 7443090 is 903447.

It can be written as a sum of positive squares in 2 ways, for example, as 7436529 + 6561 = 2727^2 + 81^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (7443091) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 6780 + ... + 7800.

Almost surely, 2^7443090 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7443090, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10053414).

7443090 is an abundant number, since it is smaller than the sum of its proper divisors (12663738).

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

7443090 is a wasteful number, since it uses less digits than its factorization.

7443090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1046 (or 1031 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 7443090 is about 2728.2027050789. The cubic root of 7443090 is about 195.2470242179.

The spelling of 7443090 in words is "seven million, four hundred forty-three thousand, ninety".