338807780 has 12 divisors (see below), whose sum is σ = 711496380. Its totient is φ = 135523104.

The previous prime is 338807771. The next prime is 338807797. The reversal of 338807780 is 87708833.

It can be written as a sum of positive squares in 2 ways, for example, as 157151296 + 181656484 = 12536^2 + 13478^2 .

It is a super-2 number, since 2×338807780² = 229581423577056800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8470175 + ... + 8470214.

It is an arithmetic number, because the mean of its divisors is an integer number (59291365).

Almost surely, 2^338807780 is an apocalyptic number.

It is an amenable number.

338807780 is an abundant number, since it is smaller than the sum of its proper divisors (372688600).

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

338807780 is a wasteful number, since it uses less digits than its factorization.

338807780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16940398 (or 16940396 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 44.

The square root of 338807780 is about 18406.7319206860. The cubic root of 338807780 is about 697.1364514759.

The spelling of 338807780 in words is "three hundred thirty-eight million, eight hundred seven thousand, seven hundred eighty".