398534260 has 24 divisors (see below), whose sum is σ = 840044520. Its totient is φ = 158818944.

The previous prime is 398534249. The next prime is 398534273. The reversal of 398534260 is 62435893.

It can be written as a sum of positive squares in 4 ways, for example, as 2842596 + 395691664 = 1686^2 + 19892^2 .

It is a congruent 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, 31659 + ... + 42418.

It is an arithmetic number, because the mean of its divisors is an integer number (35001855).

Almost surely, 2^398534260 is an apocalyptic number.

It is an amenable number.

398534260 is an abundant number, since it is smaller than the sum of its proper divisors (441510260).

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

398534260 is a wasteful number, since it uses less digits than its factorization.

398534260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74355 (or 74353 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 40.

The square root of 398534260 is about 19963.3228697028. The cubic root of 398534260 is about 735.9052261591.

The spelling of 398534260 in words is "three hundred ninety-eight million, five hundred thirty-four thousand, two hundred sixty".