20370868 has 54 divisors (see below), whose sum is σ = 43408806. Its totient is φ = 8334144.

The previous prime is 20370859. The next prime is 20370877. The reversal of 20370868 is 86807302.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20370859) and next prime (20370877).

It can be written as a sum of positive squares in 3 ways, for example, as 11478544 + 8892324 = 3388^2 + 2982^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 384330 + ... + 384382.

Almost surely, 2^20370868 is an apocalyptic number.

20370868 is a gapful number since it is divisible by the number (28) 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 20370868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21704403).

20370868 is an abundant number, since it is smaller than the sum of its proper divisors (23037938).

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

20370868 is a wasteful number, since it uses less digits than its factorization.

20370868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161 (or 99 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 20370868 is about 4513.4097974813. The cubic root of 20370868 is about 273.1093141014.

The spelling of 20370868 in words is "twenty million, three hundred seventy thousand, eight hundred sixty-eight".