20434274 has 12 divisors (see below), whose sum is σ = 35655894. Its totient is φ = 8757504.

The previous prime is 20434259. The next prime is 20434319. The reversal of 20434274 is 47243402.

It can be written as a sum of positive squares in only one way, i.e., 17347225 + 3087049 = 4165^2 + 1757^2 .

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 104159 + ... + 104354.

Almost surely, 2^20434274 is an apocalyptic number.

20434274 is a deficient number, since it is larger than the sum of its proper divisors (15221620).

20434274 is a wasteful number, since it uses less digits than its factorization.

20434274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208529 (or 208522 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 26.

The square root of 20434274 is about 4520.4285195101. The cubic root of 20434274 is about 273.3923790082.

Adding to 20434274 its reverse (47243402), we get a palindrome (67677676).

The spelling of 20434274 in words is "twenty million, four hundred thirty-four thousand, two hundred seventy-four".