47606640 has 80 divisors (see below), whose sum is σ = 148303008. Its totient is φ = 12633088.

The previous prime is 47606627. The next prime is 47606651. The reversal of 47606640 is 4660674.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69982 + ... + 70658.

Almost surely, 2^47606640 is an apocalyptic number.

47606640 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 47606640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74151504).

47606640 is an abundant number, since it is smaller than the sum of its proper divisors (100696368).

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

47606640 is a wasteful number, since it uses less digits than its factorization.

47606640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 986 (or 980 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 33.

The square root of 47606640 is about 6899.7565174432. The cubic root of 47606640 is about 362.4286407297.

The spelling of 47606640 in words is "forty-seven million, six hundred six thousand, six hundred forty".