347696820 has 48 divisors (see below), whose sum is σ = 1081725120. Its totient is φ = 92719008.

The previous prime is 347696809. The next prime is 347696831. The reversal of 347696820 is 28696743.

It is an interprime number because it is at equal distance from previous prime (347696809) and next prime (347696831).

It is a super-2 number, since 2×347696820² = 241786157276224800, which contains 22 as substring.

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

It is a congruent number.

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, 321402 + ... + 322481.

It is an arithmetic number, because the mean of its divisors is an integer number (22535940).

Almost surely, 2^347696820 is an apocalyptic number.

347696820 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

347696820 is an abundant number, since it is smaller than the sum of its proper divisors (734028300).

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

347696820 is a wasteful number, since it uses less digits than its factorization.

347696820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 643901 (or 643893 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 45.

The square root of 347696820 is about 18646.6302585749. The cubic root of 347696820 is about 703.1806416411.

The spelling of 347696820 in words is "three hundred forty-seven million, six hundred ninety-six thousand, eight hundred twenty".