20226694 has 32 divisors (see below), whose sum is σ = 32820480. Its totient is φ = 9331200.

The previous prime is 20226691. The next prime is 20226707. The reversal of 20226694 is 49662202.

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 a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20226691) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 185512 + ... + 185620.

It is an arithmetic number, because the mean of its divisors is an integer number (1025640).

Almost surely, 2^20226694 is an apocalyptic number.

20226694 is a deficient number, since it is larger than the sum of its proper divisors (12593786).

20226694 is a wasteful number, since it uses less digits than its factorization.

20226694 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 20226694 is about 4497.4096989267. The cubic root of 20226694 is about 272.4634813448.

Adding to 20226694 its reverse (49662202), we get a palindrome (69888896).

It can be divided in two parts, 202 and 26694, that added together give a square (26896 = 164²).

The spelling of 20226694 in words is "twenty million, two hundred twenty-six thousand, six hundred ninety-four".