349123620 has 24 divisors (see below), whose sum is σ = 977546304. Its totient is φ = 93099616.

The previous prime is 349123603. The next prime is 349123633. The reversal of 349123620 is 26321943.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

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, 2909304 + ... + 2909423.

It is an arithmetic number, because the mean of its divisors is an integer number (40731096).

Almost surely, 2^349123620 is an apocalyptic number.

349123620 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

349123620 is an abundant number, since it is smaller than the sum of its proper divisors (628422684).

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

349123620 is a wasteful number, since it uses less digits than its factorization.

349123620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5818739 (or 5818737 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 30.

The square root of 349123620 is about 18684.8500127777. The cubic root of 349123620 is about 704.1411804710.

The spelling of 349123620 in words is "three hundred forty-nine million, one hundred twenty-three thousand, six hundred twenty".