20878350 has 48 divisors (see below), whose sum is σ = 52132080. Its totient is φ = 5529600.

The previous prime is 20878337. The next prime is 20878373. The reversal of 20878350 is 5387802.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26766 + ... + 27534.

It is an arithmetic number, because the mean of its divisors is an integer number (1086085).

Almost surely, 2^20878350 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20878350, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26066040).

20878350 is an abundant number, since it is smaller than the sum of its proper divisors (31253730).

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

20878350 is a wasteful number, since it uses less digits than its factorization.

20878350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 965 (or 960 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 20878350 is about 4569.2833136062. The cubic root of 20878350 is about 275.3586505078.

The spelling of 20878350 in words is "twenty million, eight hundred seventy-eight thousand, three hundred fifty".