201847428 has 36 divisors (see below), whose sum is σ = 522673788. Its totient is φ = 65640960.

The previous prime is 201847427. The next prime is 201847433. The reversal of 201847428 is 824748102.

201847428 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 16016004 + 185831424 = 4002^2 + 13632^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 201847392 and 201847401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201847421) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 66901 + ... + 69852.

Almost surely, 2^201847428 is an apocalyptic number.

It is an amenable number.

201847428 is an abundant number, since it is smaller than the sum of its proper divisors (320826360).

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

201847428 is a wasteful number, since it uses less digits than its factorization.

201847428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136804 (or 136799 counting only the distinct ones).

The product of its (nonzero) digits is 28672, while the sum is 36.

The square root of 201847428 is about 14207.3019254185. The cubic root of 201847428 is about 586.5986690876.

The spelling of 201847428 in words is "two hundred one million, eight hundred forty-seven thousand, four hundred twenty-eight".