20572110 has 64 divisors (see below), whose sum is σ = 59088960. Its totient is φ = 5063040.

The previous prime is 20572099. The next prime is 20572121. The reversal of 20572110 is 1127502.

It is an interprime number because it is at equal distance from previous prime (20572099) and next prime (20572121).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is a zygodrome in base 7.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 580 + ... + 6440.

It is an arithmetic number, because the mean of its divisors is an integer number (923265).

Almost surely, 2^20572110 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20572110, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29544480).

20572110 is an abundant number, since it is smaller than the sum of its proper divisors (38516850).

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

20572110 is a wasteful number, since it uses less digits than its factorization.

20572110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5890 (or 5884 counting only the distinct ones).

The product of its (nonzero) digits is 140, while the sum is 18.

The square root of 20572110 is about 4535.6487959277. The cubic root of 20572110 is about 274.0057096507.

Adding to 20572110 its reverse (1127502), we get a palindrome (21699612).

The spelling of 20572110 in words is "twenty million, five hundred seventy-two thousand, one hundred ten".