674286138 has 24 divisors (see below), whose sum is σ = 1461544500. Its totient is φ = 224671104.

The previous prime is 674286133. The next prime is 674286143. The reversal of 674286138 is 831682476.

674286138 is a `hidden beast` number, since 6 + 7 + 4 + 28 + 613 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (674286133) and next prime (674286143).

It can be written as a sum of positive squares in 2 ways, for example, as 670136769 + 4149369 = 25887^2 + 2037^2 .

It is a junction number, because it is equal to n+sod(n) for n = 674286093 and 674286102.

It is not an unprimeable number, because it can be changed into a prime (674286133) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 49938 + ... + 61986.

Almost surely, 2^674286138 is an apocalyptic number.

674286138 is an abundant number, since it is smaller than the sum of its proper divisors (787258362).

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

674286138 is a wasteful number, since it uses less digits than its factorization.

674286138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15166 (or 15163 counting only the distinct ones).

The product of its digits is 387072, while the sum is 45.

The square root of 674286138 is about 25967.0201987059. The cubic root of 674286138 is about 876.8959760678.

The spelling of 674286138 in words is "six hundred seventy-four million, two hundred eighty-six thousand, one hundred thirty-eight".