349543620 has 48 divisors (see below), whose sum is σ = 1087470720. Its totient is φ = 93211488.

The previous prime is 349543619. The next prime is 349543633. The reversal of 349543620 is 26345943.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 323112 + ... + 324191.

It is an arithmetic number, because the mean of its divisors is an integer number (22655640).

Almost surely, 2^349543620 is an apocalyptic number.

349543620 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

349543620 is an abundant number, since it is smaller than the sum of its proper divisors (737927100).

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

349543620 is a wasteful number, since it uses less digits than its factorization.

349543620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 647321 (or 647313 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 36.

The square root of 349543620 is about 18696.0856865816. The cubic root of 349543620 is about 704.4234308120.

The spelling of 349543620 in words is "three hundred forty-nine million, five hundred forty-three thousand, six hundred twenty".