346999140 has 72 divisors (see below), whose sum is σ = 1091563200. Its totient is φ = 92531808.

The previous prime is 346999099. The next prime is 346999141. The reversal of 346999140 is 41999643.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (346999141) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30840 + ... + 40559.

It is an arithmetic number, because the mean of its divisors is an integer number (15160600).

Almost surely, 2^346999140 is an apocalyptic number.

346999140 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

346999140 is an abundant number, since it is smaller than the sum of its proper divisors (744564060).

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

346999140 is a wasteful number, since it uses less digits than its factorization.

346999140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71423 (or 71409 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 45.

The square root of 346999140 is about 18627.9129265734. The cubic root of 346999140 is about 702.7099983040.

The spelling of 346999140 in words is "three hundred forty-six million, nine hundred ninety-nine thousand, one hundred forty".