20272734 has 32 divisors (see below), whose sum is σ = 47424000. Its totient is φ = 6401592.

The previous prime is 20272699. The next prime is 20272741. The reversal of 20272734 is 43727202.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 20272698 and 20272707.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8854 + ... + 10905.

It is an arithmetic number, because the mean of its divisors is an integer number (1482000).

Almost surely, 2^20272734 is an apocalyptic number.

20272734 is an abundant number, since it is smaller than the sum of its proper divisors (27151266).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20272734 is a wasteful number, since it uses less digits than its factorization.

20272734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19789 (or 19783 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 27.

The square root of 20272734 is about 4502.5252914337. The cubic root of 20272734 is about 272.6700518135.

Adding to 20272734 its reverse (43727202), we get a palindrome (63999936).

It can be divided in two parts, 2027 and 2734, that added together give a square (4761 = 69²).

The spelling of 20272734 in words is "twenty million, two hundred seventy-two thousand, seven hundred thirty-four".