20315734 has 8 divisors (see below), whose sum is σ = 30584448. Its totient is φ = 10120920.

The previous prime is 20315723. The next prime is 20315749. The reversal of 20315734 is 43751302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 20315699 and 20315708.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17782 + ... + 18889.

It is an arithmetic number, because the mean of its divisors is an integer number (3823056).

Almost surely, 2^20315734 is an apocalyptic number.

20315734 is a deficient number, since it is larger than the sum of its proper divisors (10268714).

20315734 is a wasteful number, since it uses less digits than its factorization.

20315734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36950.

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 20315734 is about 4507.2978601375. The cubic root of 20315734 is about 272.8627002618.

The spelling of 20315734 in words is "twenty million, three hundred fifteen thousand, seven hundred thirty-four".