340778892 has 30 divisors (see below), whose sum is σ = 806194508. Its totient is φ = 112036896.

The previous prime is 340778873. The next prime is 340778909. The reversal of 340778892 is 298877043.

It is a super-2 number, since 2×340778892² = 232260506465495328, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 4668168 + ... + 4668240.

Almost surely, 2^340778892 is an apocalyptic number.

It is an amenable number.

340778892 is an abundant number, since it is smaller than the sum of its proper divisors (465415616).

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

340778892 is an frugal number, since it uses more digits than its factorization.

340778892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299 (or 78 counting only the distinct ones).

The product of its (nonzero) digits is 677376, while the sum is 48.

The square root of 340778892 is about 18460.1975070691. The cubic root of 340778892 is about 698.4857689736.

Multiplying 340778892 by its sum of digits (48), we get a square (16357386816 = 127896²).

The spelling of 340778892 in words is "three hundred forty million, seven hundred seventy-eight thousand, eight hundred ninety-two".