20002150 has 24 divisors (see below), whose sum is σ = 42519600. Its totient is φ = 6857760.

The previous prime is 20002133. The next prime is 20002159. The reversal of 20002150 is 5120002.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20002159) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28225 + ... + 28924.

It is an arithmetic number, because the mean of its divisors is an integer number (1771650).

Almost surely, 2^20002150 is an apocalyptic number.

20002150 is an abundant number, since it is smaller than the sum of its proper divisors (22517450).

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

20002150 is a wasteful number, since it uses less digits than its factorization.

20002150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57168 (or 57163 counting only the distinct ones).

The product of its (nonzero) digits is 20, while the sum is 10.

The square root of 20002150 is about 4472.3763258474. The cubic root of 20002150 is about 271.4514879741.

Adding to 20002150 its reverse (5120002), we get a palindrome (25122152).

The spelling of 20002150 in words is "twenty million, two thousand, one hundred fifty".