47028780 has 36 divisors (see below), whose sum is σ = 142654512. Its totient is φ = 12540960.

The previous prime is 47028733. The next prime is 47028791. The reversal of 47028780 is 8782074.

47028780 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×47028780² = 4423412296576800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 130456 + ... + 130815.

Almost surely, 2^47028780 is an apocalyptic number.

It is an amenable number.

47028780 is an abundant number, since it is smaller than the sum of its proper divisors (95625732).

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

47028780 is a wasteful number, since it uses less digits than its factorization.

47028780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261286 (or 261281 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 36.

The square root of 47028780 is about 6857.7532764018. The cubic root of 47028780 is about 360.9562539870.

The spelling of 47028780 in words is "forty-seven million, twenty-eight thousand, seven hundred eighty".