20667150 has 132 divisors (see below), whose sum is σ = 65898312. Its totient is φ = 4723920.

The previous prime is 20667137. The next prime is 20667151. The reversal of 20667150 is 5176602.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20667151) by changing a digit.

It is a polite number, since it can be written in 65 ways as a sum of consecutive naturals, for example, 2952447 + ... + 2952453.

Almost surely, 2^20667150 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20667150, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32949156).

20667150 is an abundant number, since it is smaller than the sum of its proper divisors (45231162).

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

20667150 is an frugal number, since it uses more digits than its factorization.

20667150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49 (or 17 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 20667150 is about 4546.1137249303. The cubic root of 20667150 is about 274.4270163400.

It can be divided in two parts, 2066 and 7150, that added together give a square (9216 = 96²).

The spelling of 20667150 in words is "twenty million, six hundred sixty-seven thousand, one hundred fifty".