47928840 has 64 divisors (see below), whose sum is σ = 144365760. Its totient is φ = 12729600.

The previous prime is 47928817. The next prime is 47928841. The reversal of 47928840 is 4882974.

It is a junction number, because it is equal to n+sod(n) for n = 47928792 and 47928801.

It is not an unprimeable number, because it can be changed into a prime (47928841) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36190 + ... + 37490.

It is an arithmetic number, because the mean of its divisors is an integer number (2255715).

Almost surely, 2^47928840 is an apocalyptic number.

47928840 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 47928840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72182880).

47928840 is an abundant number, since it is smaller than the sum of its proper divisors (96436920).

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

47928840 is a wasteful number, since it uses less digits than its factorization.

47928840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1622 (or 1618 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 42.

The square root of 47928840 is about 6923.0657948629. The cubic root of 47928840 is about 363.2444376596.

The spelling of 47928840 in words is "forty-seven million, nine hundred twenty-eight thousand, eight hundred forty".