7493890 has 16 divisors (see below), whose sum is σ = 13954680. Its totient is φ = 2894080.

The previous prime is 7493887. The next prime is 7493891. The reversal of 7493890 is 983947.

It can be written as a sum of positive squares in 4 ways, for example, as 5294601 + 2199289 = 2301^2 + 1483^2 .

It is not an unprimeable number, because it can be changed into a prime (7493891) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12631 + ... + 13210.

Almost surely, 2^7493890 is an apocalyptic number.

7493890 is a deficient number, since it is larger than the sum of its proper divisors (6460790).

7493890 is a wasteful number, since it uses less digits than its factorization.

7493890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25877.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 7493890 is about 2737.4970319619. The cubic root of 7493890 is about 195.6902124145.

The spelling of 7493890 in words is "seven million, four hundred ninety-three thousand, eight hundred ninety".