47686428 has 96 divisors (see below), whose sum is σ = 137894400. Its totient is φ = 14162688.

The previous prime is 47686427. The next prime is 47686433. The reversal of 47686428 is 82468674.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47686421) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 34201 + ... + 35567.

It is an arithmetic number, because the mean of its divisors is an integer number (1436400).

Almost surely, 2^47686428 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 47686428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68947200).

47686428 is an abundant number, since it is smaller than the sum of its proper divisors (90207972).

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

47686428 is a wasteful number, since it uses less digits than its factorization.

47686428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1416 (or 1408 counting only the distinct ones).

The product of its digits is 516096, while the sum is 45.

The square root of 47686428 is about 6905.5360400189. The cubic root of 47686428 is about 362.6310026715.

The spelling of 47686428 in words is "forty-seven million, six hundred eighty-six thousand, four hundred twenty-eight".