52128198 has 20 divisors (see below), whose sum is σ = 116806140. Its totient is φ = 17376012.

The previous prime is 52128163. The next prime is 52128247. The reversal of 52128198 is 89182125.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 160728 + ... + 161051.

It is an arithmetic number, because the mean of its divisors is an integer number (5840307).

Almost surely, 2^52128198 is an apocalyptic number.

52128198 is an abundant number, since it is smaller than the sum of its proper divisors (64677942).

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

52128198 is a wasteful number, since it uses less digits than its factorization.

52128198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321793 (or 321784 counting only the distinct ones).

The product of its digits is 11520, while the sum is 36.

The square root of 52128198 is about 7219.9860110668. The cubic root of 52128198 is about 373.5575950278.

It can be divided in two parts, 52128 and 198, that added together give a triangular number (52326 = T₃₂₃).

The spelling of 52128198 in words is "fifty-two million, one hundred twenty-eight thousand, one hundred ninety-eight".