20770104 has 64 divisors (see below), whose sum is σ = 54743040. Its totient is φ = 6554240.

The previous prime is 20770049. The next prime is 20770109. The reversal of 20770104 is 40107702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20770109) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 105334 + ... + 105530.

It is an arithmetic number, because the mean of its divisors is an integer number (855360).

Almost surely, 2^20770104 is an apocalyptic number.

20770104 is a gapful number since it is divisible by the number (24) 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 20770104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27371520).

20770104 is an abundant number, since it is smaller than the sum of its proper divisors (33972936).

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

20770104 is a wasteful number, since it uses less digits than its factorization.

20770104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420 (or 416 counting only the distinct ones).

The product of its (nonzero) digits is 392, while the sum is 21.

The square root of 20770104 is about 4557.4229560136. The cubic root of 20770104 is about 274.8819504339.

Adding to 20770104 its reverse (40107702), we get a palindrome (60877806).

The spelling of 20770104 in words is "twenty million, seven hundred seventy thousand, one hundred four".