7390138 has 16 divisors (see below), whose sum is σ = 13414464. Its totient is φ = 2980800.

The previous prime is 7390129. The next prime is 7390151. The reversal of 7390138 is 8310937.

It is a super-2 number, since 2×7390138² = 109228279318088, which contains 22 as substring.

It is an Ulam number.

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, 15288 + ... + 15763.

It is an arithmetic number, because the mean of its divisors is an integer number (838404).

Almost surely, 2^7390138 is an apocalyptic number.

7390138 is a deficient number, since it is larger than the sum of its proper divisors (6024326).

7390138 is a wasteful number, since it uses less digits than its factorization.

7390138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31077.

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 7390138 is about 2718.4808257554. The cubic root of 7390138 is about 194.7829098424.

The spelling of 7390138 in words is "seven million, three hundred ninety thousand, one hundred thirty-eight".