345329272 has 8 divisors (see below), whose sum is σ = 647492400. Its totient is φ = 172664632.

The previous prime is 345329239. The next prime is 345329273. The reversal of 345329272 is 272923543.

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

It is a super-2 number, since 2×345329272² = 238504612200099968, which contains 22 as substring.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345329273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21583072 + ... + 21583087.

It is an arithmetic number, because the mean of its divisors is an integer number (80936550).

Almost surely, 2^345329272 is an apocalyptic number.

It is an amenable number.

345329272 is a deficient number, since it is larger than the sum of its proper divisors (302163128).

345329272 is a wasteful number, since it uses less digits than its factorization.

345329272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43166165 (or 43166161 counting only the distinct ones).

The product of its digits is 90720, while the sum is 37.

The square root of 345329272 is about 18583.0372113925. The cubic root of 345329272 is about 701.5809654421.

The spelling of 345329272 in words is "three hundred forty-five million, three hundred twenty-nine thousand, two hundred seventy-two".