20234040 has 32 divisors (see below), whose sum is σ = 60702480. Its totient is φ = 5395712.

The previous prime is 20234023. The next prime is 20234047. The reversal of 20234040 is 4043202.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20234047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84189 + ... + 84428.

Almost surely, 2^20234040 is an apocalyptic number.

20234040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20234040 is an abundant number, since it is smaller than the sum of its proper divisors (40468440).

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

20234040 is a wasteful number, since it uses less digits than its factorization.

20234040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168631 (or 168627 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 15.

The square root of 20234040 is about 4498.2263171166. The cubic root of 20234040 is about 272.4964620925.

Adding to 20234040 its reverse (4043202), we get a palindrome (24277242).

The spelling of 20234040 in words is "twenty million, two hundred thirty-four thousand, forty".