342728637 has 4 divisors (see below), whose sum is σ = 456971520. Its totient is φ = 228485756.

The previous prime is 342728609. The next prime is 342728657. The reversal of 342728637 is 736827243.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 342728637 - 2⁷ = 342728509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (342728657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57121437 + ... + 57121442.

It is an arithmetic number, because the mean of its divisors is an integer number (114242880).

Almost surely, 2^342728637 is an apocalyptic number.

It is an amenable number.

342728637 is a deficient number, since it is larger than the sum of its proper divisors (114242883).

342728637 is a wasteful number, since it uses less digits than its factorization.

342728637 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114242882.

The product of its digits is 338688, while the sum is 42.

The square root of 342728637 is about 18512.9316154952. The cubic root of 342728637 is about 699.8153506163.

The spelling of 342728637 in words is "three hundred forty-two million, seven hundred twenty-eight thousand, six hundred thirty-seven".