20980150 has 12 divisors (see below), whose sum is σ = 39023172. Its totient is φ = 8392040.

The previous prime is 20980139. The next prime is 20980153. The reversal of 20980150 is 5108902.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20980153) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 209752 + ... + 209851.

It is an arithmetic number, because the mean of its divisors is an integer number (3251931).

Almost surely, 2^20980150 is an apocalyptic number.

20980150 is a deficient number, since it is larger than the sum of its proper divisors (18043022).

20980150 is a wasteful number, since it uses less digits than its factorization.

20980150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419615 (or 419610 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 20980150 is about 4580.4093703511. The cubic root of 20980150 is about 275.8054622267.

The spelling of 20980150 in words is "twenty million, nine hundred eighty thousand, one hundred fifty".