7293990 has 96 divisors (see below), whose sum is σ = 20590848. Its totient is φ = 1636800.

The previous prime is 7293989. The next prime is 7294093. The reversal of 7293990 is 993927.

7293990 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 235275 + ... + 235305.

It is an arithmetic number, because the mean of its divisors is an integer number (214488).

Almost surely, 2^7293990 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7293990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10295424).

7293990 is an abundant number, since it is smaller than the sum of its proper divisors (13296858).

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

7293990 is a wasteful number, since it uses less digits than its factorization.

7293990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106 (or 75 counting only the distinct ones).

The product of its (nonzero) digits is 30618, while the sum is 39.

The square root of 7293990 is about 2700.7387878134. The cubic root of 7293990 is about 193.9344909366.

The spelling of 7293990 in words is "seven million, two hundred ninety-three thousand, nine hundred ninety".