20702074 has 4 divisors (see below), whose sum is σ = 31053114. Its totient is φ = 10351036.

The previous prime is 20702069. The next prime is 20702081. The reversal of 20702074 is 47020702.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 47020702 = 2 ⋅23510351.

It can be written as a sum of positive squares in only one way, i.e., 19864849 + 837225 = 4457^2 + 915^2 .

It is a Smith number, since the sum of its digits (22) 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, 5175517 + ... + 5175520.

Almost surely, 2^20702074 is an apocalyptic number.

20702074 is a deficient number, since it is larger than the sum of its proper divisors (10351040).

20702074 is a wasteful number, since it uses less digits than its factorization.

20702074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10351039.

The product of its (nonzero) digits is 784, while the sum is 22.

The square root of 20702074 is about 4549.9531865724. The cubic root of 20702074 is about 274.5815078186.

Adding to 20702074 its reverse (47020702), we get a palindrome (67722776).

It can be divided in two parts, 2070207 and 4, that multiplied together give a palindrome (8280828).

The spelling of 20702074 in words is "twenty million, seven hundred two thousand, seventy-four".