7974138 has 16 divisors (see below), whose sum is σ = 15986880. Its totient is φ = 2651616.

The previous prime is 7974137. The next prime is 7974143. The reversal of 7974138 is 8314797.

It is a junction number, because it is equal to n+sod(n) for n = 7974096 and 7974105.

It is not an unprimeable number, because it can be changed into a prime (7974137) 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, 1558 + ... + 4286.

It is an arithmetic number, because the mean of its divisors is an integer number (999180).

Almost surely, 2^7974138 is an apocalyptic number.

7974138 is an abundant number, since it is smaller than the sum of its proper divisors (8012742).

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

7974138 is a wasteful number, since it uses less digits than its factorization.

7974138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3221.

The product of its digits is 42336, while the sum is 39.

The square root of 7974138 is about 2823.8516249973. The cubic root of 7974138 is about 199.7842506782.

The spelling of 7974138 in words is "seven million, nine hundred seventy-four thousand, one hundred thirty-eight".