20040696 has 144 divisors (see below), whose sum is σ = 61949160. Its totient is φ = 6065280.

The previous prime is 20040689. The next prime is 20040701. The reversal of 20040696 is 69604002.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 328506 + ... + 328566.

Almost surely, 2^20040696 is an apocalyptic number.

20040696 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20040696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30974580).

20040696 is an abundant number, since it is smaller than the sum of its proper divisors (41908464).

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

20040696 is a wasteful number, since it uses less digits than its factorization.

20040696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108 (or 79 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 20040696 is about 4476.6835939119. The cubic root of 20040696 is about 271.6257468237.

Adding to 20040696 its reverse (69604002), we get a palindrome (89644698).

It can be divided in two parts, 20040 and 696, that added together give a 4-th power (20736 = 12⁴).

The spelling of 20040696 in words is "twenty million, forty thousand, six hundred ninety-six".