47280720 has 40 divisors (see below), whose sum is σ = 146570976. Its totient is φ = 12608128.

The previous prime is 47280719. The next prime is 47280733. The reversal of 47280720 is 2708274.

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

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

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 pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98262 + ... + 98741.

Almost surely, 2^47280720 is an apocalyptic number.

47280720 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

47280720 is an abundant number, since it is smaller than the sum of its proper divisors (99290256).

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

47280720 is a wasteful number, since it uses less digits than its factorization.

47280720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197019 (or 197013 counting only the distinct ones).

The product of its (nonzero) digits is 6272, while the sum is 30.

The square root of 47280720 is about 6876.0977305446. The cubic root of 47280720 is about 361.5996714044.

Adding to 47280720 its reverse (2708274), we get a palindrome (49988994).

The spelling of 47280720 in words is "forty-seven million, two hundred eighty thousand, seven hundred twenty".