47009280 has 80 divisors (see below), whose sum is σ = 150307344. Its totient is φ = 12533760.

The previous prime is 47009269. The next prime is 47009297. The reversal of 47009280 is 8290074.

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

It is a super-2 number, since 2×47009280² = 4419744812236800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4620 + ... + 10740.

Almost surely, 2^47009280 is an apocalyptic number.

47009280 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 47009280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75153672).

47009280 is an abundant number, since it is smaller than the sum of its proper divisors (103298064).

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

47009280 is an equidigital number, since it uses as much as digits as its factorization.

47009280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6147 (or 6131 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 47009280 is about 6856.3313805562. The cubic root of 47009280 is about 360.9063581572.

The spelling of 47009280 in words is "forty-seven million, nine thousand, two hundred eighty".