47392840 has 64 divisors (see below), whose sum is σ = 122472000. Its totient is φ = 16323840.

The previous prime is 47392823. The next prime is 47392861. The reversal of 47392840 is 4829374.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 47392840.

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, 5526 + ... + 11194.

It is an arithmetic number, because the mean of its divisors is an integer number (1913625).

Almost surely, 2^47392840 is an apocalyptic number.

47392840 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 47392840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61236000).

47392840 is an abundant number, since it is smaller than the sum of its proper divisors (75079160).

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

47392840 is a wasteful number, since it uses less digits than its factorization.

47392840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5710 (or 5706 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 47392840 is about 6884.2457829453. The cubic root of 47392840 is about 361.8852744310.

The spelling of 47392840 in words is "forty-seven million, three hundred ninety-two thousand, eight hundred forty".