20151250 has 80 divisors (see below), whose sum is σ = 44985600. Its totient is φ = 6762000.

The previous prime is 20151233. The next prime is 20151251. The reversal of 20151250 is 5215102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20151251) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 428727 + ... + 428773.

It is an arithmetic number, because the mean of its divisors is an integer number (562320).

Almost surely, 2^20151250 is an apocalyptic number.

20151250 is an abundant number, since it is smaller than the sum of its proper divisors (24834350).

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

20151250 is an frugal number, since it uses more digits than its factorization.

20151250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90 (or 61 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 16.

The square root of 20151250 is about 4489.0143684332. The cubic root of 20151250 is about 272.1243034070.

Adding to 20151250 its reverse (5215102), we get a palindrome (25366352).

The spelling of 20151250 in words is "twenty million, one hundred fifty-one thousand, two hundred fifty".