20707074 has 48 divisors (see below), whose sum is σ = 47623680. Its totient is φ = 6484320.

The previous prime is 20707069. The next prime is 20707081. The reversal of 20707074 is 47070702.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 65164 + ... + 65480.

It is an arithmetic number, because the mean of its divisors is an integer number (992160).

Almost surely, 2^20707074 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20707074, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23811840).

20707074 is an abundant number, since it is smaller than the sum of its proper divisors (26916606).

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

20707074 is a wasteful number, since it uses less digits than its factorization.

20707074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 535 (or 532 counting only the distinct ones).

The product of its (nonzero) digits is 2744, while the sum is 27.

The square root of 20707074 is about 4550.5026096026. The cubic root of 20707074 is about 274.6036118362.

Adding to 20707074 its reverse (47070702), we get a palindrome (67777776).

It can be divided in two parts, 2070707 and 4, that multiplied together give a palindrome (8282828).

The spelling of 20707074 in words is "twenty million, seven hundred seven thousand, seventy-four".