15674138 has 4 divisors (see below), whose sum is σ = 23511210. Its totient is φ = 7837068.

The previous prime is 15674137. The next prime is 15674147. The reversal of 15674138 is 83147651.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 83147651 = 241 ⋅345011.

It can be written as a sum of positive squares in only one way, i.e., 10259209 + 5414929 = 3203^2 + 2327^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 15674098 and 15674107.

It is not an unprimeable number, because it can be changed into a prime (15674137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3918533 + ... + 3918536.

Almost surely, 2^15674138 is an apocalyptic number.

15674138 is a deficient number, since it is larger than the sum of its proper divisors (7837072).

15674138 is an equidigital number, since it uses as much as digits as its factorization.

15674138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7837071.

The product of its digits is 20160, while the sum is 35.

The square root of 15674138 is about 3959.0577161744. The cubic root of 15674138 is about 250.2617950910.

The spelling of 15674138 in words is "fifteen million, six hundred seventy-four thousand, one hundred thirty-eight".