20831734 has 16 divisors (see below), whose sum is σ = 38958336. Its totient is φ = 8116200.

The previous prime is 20831729. The next prime is 20831761. The reversal of 20831734 is 43713802.

It is a super-2 number, since 2×20831734² = 867922282893512, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67482 + ... + 67789.

It is an arithmetic number, because the mean of its divisors is an integer number (2434896).

Almost surely, 2^20831734 is an apocalyptic number.

20831734 is a deficient number, since it is larger than the sum of its proper divisors (18126602).

20831734 is a wasteful number, since it uses less digits than its factorization.

20831734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135291.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 20831734 is about 4564.1794443251. The cubic root of 20831734 is about 275.1535627179.

The spelling of 20831734 in words is "twenty million, eight hundred thirty-one thousand, seven hundred thirty-four".