20204010 has 48 divisors (see below), whose sum is σ = 54348840. Its totient is φ = 5201280.

The previous prime is 20204003. The next prime is 20204017. The reversal of 20204010 is 1040202.

It is an interprime number because it is at equal distance from previous prime (20204003) and next prime (20204017).

It can be written as a sum of positive squares in 4 ways, for example, as 13593969 + 6610041 = 3687^2 + 2571^2 .

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20203983 and 20204001.

It is not an unprimeable number, because it can be changed into a prime (20204017) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1261 + ... + 6480.

Almost surely, 2^20204010 is an apocalyptic number.

20204010 is an abundant number, since it is smaller than the sum of its proper divisors (34144830).

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

20204010 is a wasteful number, since it uses less digits than its factorization.

20204010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7783 (or 7780 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

The square root of 20204010 is about 4494.8870953562. The cubic root of 20204010 is about 272.3615883788.

Adding to 20204010 its reverse (1040202), we get a palindrome (21244212).

The spelling of 20204010 in words is "twenty million, two hundred four thousand, ten".