20739274 has 4 divisors (see below), whose sum is σ = 31108914. Its totient is φ = 10369636.

The previous prime is 20739253. The next prime is 20739283. The reversal of 20739274 is 47293702.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 19316025 + 1423249 = 4395^2 + 1193^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5184817 + ... + 5184820.

Almost surely, 2^20739274 is an apocalyptic number.

20739274 is a deficient number, since it is larger than the sum of its proper divisors (10369640).

20739274 is a wasteful number, since it uses less digits than its factorization.

20739274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10369639.

The product of its (nonzero) digits is 21168, while the sum is 34.

The square root of 20739274 is about 4554.0393059349. The cubic root of 20739274 is about 274.7458765353.

The spelling of 20739274 in words is "twenty million, seven hundred thirty-nine thousand, two hundred seventy-four".