20120734 has 16 divisors (see below), whose sum is σ = 31898880. Its totient is φ = 9492120.

The previous prime is 20120729. The next prime is 20120743. The reversal of 20120734 is 43702102.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9819 + ... + 11689.

It is an arithmetic number, because the mean of its divisors is an integer number (1993680).

Almost surely, 2^20120734 is an apocalyptic number.

20120734 is a deficient number, since it is larger than the sum of its proper divisors (11778146).

20120734 is a wasteful number, since it uses less digits than its factorization.

20120734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2175.

The product of its (nonzero) digits is 336, while the sum is 19.

The square root of 20120734 is about 4485.6141162610. The cubic root of 20120734 is about 271.9868704014.

Adding to 20120734 its reverse (43702102), we get a palindrome (63822836).

The spelling of 20120734 in words is "twenty million, one hundred twenty thousand, seven hundred thirty-four".