20612734 has 4 divisors (see below), whose sum is σ = 30919104. Its totient is φ = 10306366.

The previous prime is 20612723. The next prime is 20612741. The reversal of 20612734 is 43721602.

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 = 20612699 and 20612708.

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, 5153182 + ... + 5153185.

It is an arithmetic number, because the mean of its divisors is an integer number (7729776).

Almost surely, 2^20612734 is an apocalyptic number.

20612734 is a deficient number, since it is larger than the sum of its proper divisors (10306370).

20612734 is a wasteful number, since it uses less digits than its factorization.

20612734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10306369.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 20612734 is about 4540.1248881501. The cubic root of 20612734 is about 274.1859518815.

The spelling of 20612734 in words is "twenty million, six hundred twelve thousand, seven hundred thirty-four".