47086640 has 40 divisors (see below), whose sum is σ = 110336688. Its totient is φ = 18686720.

The previous prime is 47086619. The next prime is 47086709. The reversal of 47086640 is 4668074.

47086640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 47086640.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8234 + ... + 12726.

Almost surely, 2^47086640 is an apocalyptic number.

47086640 is a gapful number since it is divisible by the number (40) 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 47086640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55168344).

47086640 is an abundant number, since it is smaller than the sum of its proper divisors (63250048).

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

47086640 is a wasteful number, since it uses less digits than its factorization.

47086640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4637 (or 4631 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 35.

The square root of 47086640 is about 6861.9705624551. The cubic root of 47086640 is about 361.1042227395.

It can be divided in two parts, 470 and 86640, that multiplied together give a triangular number (40720800 = T₉₀₂₄).

The spelling of 47086640 in words is "forty-seven million, eighty-six thousand, six hundred forty".