340432780 has 24 divisors (see below), whose sum is σ = 728399952. Its totient is φ = 133603392.

The previous prime is 340432777. The next prime is 340432783. The reversal of 340432780 is 87234043.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (340432777) and next prime (340432783).

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (340432783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 159522 + ... + 161641.

It is an arithmetic number, because the mean of its divisors is an integer number (30349998).

Almost surely, 2^340432780 is an apocalyptic number.

It is an amenable number.

340432780 is an abundant number, since it is smaller than the sum of its proper divisors (387967172).

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

340432780 is a wasteful number, since it uses less digits than its factorization.

340432780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321225 (or 321223 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 31.

The square root of 340432780 is about 18450.8205779580. The cubic root of 340432780 is about 698.2492165694.

The spelling of 340432780 in words is "three hundred forty million, four hundred thirty-two thousand, seven hundred eighty".