20602800 has 180 divisors, whose sum is σ = 73458840. Its totient is φ = 5345280.

The previous prime is 20602739. The next prime is 20602801. The reversal of 20602800 is 820602.

It is a tau number, because it is divible by the number of its divisors (180).

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

It is not an unprimeable number, because it can be changed into a prime (20602801) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 212352 + ... + 212448.

Almost surely, 2^20602800 is an apocalyptic number.

20602800 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20602800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36729420).

20602800 is an abundant number, since it is smaller than the sum of its proper divisors (52856040).

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

20602800 is a wasteful number, since it uses less digits than its factorization.

20602800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180 (or 166 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 20602800 is about 4539.0307335377. The cubic root of 20602800 is about 274.1418981925.

The spelling of 20602800 in words is "twenty million, six hundred two thousand, eight hundred".