340256404 has 6 divisors (see below), whose sum is σ = 595448714. Its totient is φ = 170128200.

The previous prime is 340256383. The next prime is 340256407. The reversal of 340256404 is 404652043.

It can be written as a sum of positive squares in only one way, i.e., 276224400 + 64032004 = 16620^2 + 8002^2 .

It is a super-2 number, since 2×340256404² = 231548840926022432, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340256407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42532047 + ... + 42532054.

Almost surely, 2^340256404 is an apocalyptic number.

It is an amenable number.

340256404 is a deficient number, since it is larger than the sum of its proper divisors (255192310).

340256404 is a wasteful number, since it uses less digits than its factorization.

340256404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85064105 (or 85064103 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 28.

The square root of 340256404 is about 18446.0403339036. The cubic root of 340256404 is about 698.1286096188.

The spelling of 340256404 in words is "three hundred forty million, two hundred fifty-six thousand, four hundred four".