20412734 has 4 divisors (see below), whose sum is σ = 30619104. Its totient is φ = 10206366.

The previous prime is 20412727. The next prime is 20412797. The reversal of 20412734 is 43721402.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 43721402 = 2 ⋅21860701.

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, 5103182 + ... + 5103185.

It is an arithmetic number, because the mean of its divisors is an integer number (7654776).

Almost surely, 2^20412734 is an apocalyptic number.

20412734 is a deficient number, since it is larger than the sum of its proper divisors (10206370).

20412734 is a wasteful number, since it uses less digits than its factorization.

20412734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10206369.

The product of its (nonzero) digits is 1344, while the sum is 23.

The square root of 20412734 is about 4518.0453738315. The cubic root of 20412734 is about 273.2962832325.

The spelling of 20412734 in words is "twenty million, four hundred twelve thousand, seven hundred thirty-four".