56742638 has 4 divisors (see below), whose sum is σ = 85113960. Its totient is φ = 28371318.

The previous prime is 56742613. The next prime is 56742641. The reversal of 56742638 is 83624765.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 56742595 and 56742604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14185658 + ... + 14185661.

It is an arithmetic number, because the mean of its divisors is an integer number (21278490).

Almost surely, 2^56742638 is an apocalyptic number.

56742638 is a deficient number, since it is larger than the sum of its proper divisors (28371322).

56742638 is a wasteful number, since it uses less digits than its factorization.

56742638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28371321.

The product of its digits is 241920, while the sum is 41.

The square root of 56742638 is about 7532.7709377094. The cubic root of 56742638 is about 384.2700240175.

The spelling of 56742638 in words is "fifty-six million, seven hundred forty-two thousand, six hundred thirty-eight".