398674026 has 12 divisors (see below), whose sum is σ = 863793762. Its totient is φ = 132891336.

The previous prime is 398674007. The next prime is 398674051. The reversal of 398674026 is 620476893.

It can be written as a sum of positive squares in only one way, i.e., 227979801 + 170694225 = 15099^2 + 13065^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11074261 + ... + 11074296.

Almost surely, 2^398674026 is an apocalyptic number.

398674026 is an abundant number, since it is smaller than the sum of its proper divisors (465119736).

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

398674026 is a wasteful number, since it uses less digits than its factorization.

398674026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22148565 (or 22148562 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 45.

The square root of 398674026 is about 19966.8231323864. The cubic root of 398674026 is about 735.9912434469.

The spelling of 398674026 in words is "three hundred ninety-eight million, six hundred seventy-four thousand, twenty-six".