338740398 has 24 divisors (see below), whose sum is σ = 772566600. Its totient is φ = 106970544.

The previous prime is 338740397. The next prime is 338740399. The reversal of 338740398 is 893047833.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (338740397) and next prime (338740399).

It is a super-2 number, since 2×338740398² = 229490114474396808, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (338740397) 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, 494893 + ... + 495576.

It is an arithmetic number, because the mean of its divisors is an integer number (32190275).

Almost surely, 2^338740398 is an apocalyptic number.

338740398 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

338740398 is an abundant number, since it is smaller than the sum of its proper divisors (433826202).

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

338740398 is a wasteful number, since it uses less digits than its factorization.

338740398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 990496 (or 990493 counting only the distinct ones).

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

The square root of 338740398 is about 18404.9014667289. The cubic root of 338740398 is about 697.0902329752.

The spelling of 338740398 in words is "three hundred thirty-eight million, seven hundred forty thousand, three hundred ninety-eight".