340907780 has 12 divisors (see below), whose sum is σ = 715906380. Its totient is φ = 136363104.

The previous prime is 340907767. The next prime is 340907797. The reversal of 340907780 is 87709043.

It can be written as a sum of positive squares in 2 ways, for example, as 137217796 + 203689984 = 11714^2 + 14272^2 .

It is a super-2 number, since 2×340907780² = 232436228929056800, 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, 8522675 + ... + 8522714.

It is an arithmetic number, because the mean of its divisors is an integer number (59658865).

Almost surely, 2^340907780 is an apocalyptic number.

It is an amenable number.

340907780 is an abundant number, since it is smaller than the sum of its proper divisors (374998600).

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

340907780 is a wasteful number, since it uses less digits than its factorization.

340907780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17045398 (or 17045396 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 38.

The square root of 340907780 is about 18463.6881472798. The cubic root of 340907780 is about 698.5738173519.

The spelling of 340907780 in words is "three hundred forty million, nine hundred seven thousand, seven hundred eighty".