20734074 has 24 divisors (see below), whose sum is σ = 45252480. Its totient is φ = 6860808.

The previous prime is 20734061. The next prime is 20734079. The reversal of 20734074 is 47043702.

It is not an unprimeable number, because it can be changed into a prime (20734079) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1642 + ... + 6645.

It is an arithmetic number, because the mean of its divisors is an integer number (1885520).

Almost surely, 2^20734074 is an apocalyptic number.

20734074 is an abundant number, since it is smaller than the sum of its proper divisors (24518406).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20734074 is a wasteful number, since it uses less digits than its factorization.

20734074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8434 (or 8431 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 27.

The square root of 20734074 is about 4553.4683484131. The cubic root of 20734074 is about 274.7229120867.

Adding to 20734074 its reverse (47043702), we get a palindrome (67777776).

The spelling of 20734074 in words is "twenty million, seven hundred thirty-four thousand, seventy-four".