47499280 has 40 divisors (see below), whose sum is σ = 110843352. Its totient is φ = 18929664.

The previous prime is 47499271. The next prime is 47499293. The reversal of 47499280 is 8299474.

It can be written as a sum of positive squares in 4 ways, for example, as 3196944 + 44302336 = 1788^2 + 6656^2 .

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

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors.

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, 24424 + ... + 26296.

Almost surely, 2^47499280 is an apocalyptic number.

47499280 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

47499280 is an abundant number, since it is smaller than the sum of its proper divisors (63344072).

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

47499280 is a wasteful number, since it uses less digits than its factorization.

47499280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2203 (or 2197 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 47499280 is about 6891.9721415572. The cubic root of 47499280 is about 362.1559923128.

The spelling of 47499280 in words is "forty-seven million, four hundred ninety-nine thousand, two hundred eighty".