20741674 has 4 divisors (see below), whose sum is σ = 31112514. Its totient is φ = 10370836.

The previous prime is 20741621. The next prime is 20741713. The reversal of 20741674 is 47614702.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 47614702 = 2 ⋅23807351.

It can be written as a sum of positive squares in only one way, i.e., 13140625 + 7601049 = 3625^2 + 2757^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5185417 + ... + 5185420.

Almost surely, 2^20741674 is an apocalyptic number.

20741674 is a deficient number, since it is larger than the sum of its proper divisors (10370840).

20741674 is a wasteful number, since it uses less digits than its factorization.

20741674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10370839.

The product of its (nonzero) digits is 9408, while the sum is 31.

The square root of 20741674 is about 4554.3028006491. The cubic root of 20741674 is about 274.7564742170.

The spelling of 20741674 in words is "twenty million, seven hundred forty-one thousand, six hundred seventy-four".