346221416 has 8 divisors (see below), whose sum is σ = 649165170. Its totient is φ = 173110704.

The previous prime is 346221409. The next prime is 346221437. The reversal of 346221416 is 614122643.

It can be written as a sum of positive squares in only one way, i.e., 341140900 + 5080516 = 18470^2 + 2254^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21638831 + ... + 21638846.

Almost surely, 2^346221416 is an apocalyptic number.

It is an amenable number.

346221416 is a deficient number, since it is larger than the sum of its proper divisors (302943754).

346221416 is a wasteful number, since it uses less digits than its factorization.

346221416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43277683 (or 43277679 counting only the distinct ones).

The product of its digits is 6912, while the sum is 29.

The square root of 346221416 is about 18607.0259848263. The cubic root of 346221416 is about 702.1846144485.

The spelling of 346221416 in words is "three hundred forty-six million, two hundred twenty-one thousand, four hundred sixteen".