47002778 has 8 divisors (see below), whose sum is σ = 71556672. Its totient is φ = 23150556.

The previous prime is 47002771. The next prime is 47002783. The reversal of 47002778 is 87720074.

47002778 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×47002778² = 4418522279434568, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (47002771) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 175250 + ... + 175517.

It is an arithmetic number, because the mean of its divisors is an integer number (8944584).

Almost surely, 2^47002778 is an apocalyptic number.

47002778 is a deficient number, since it is larger than the sum of its proper divisors (24553894).

47002778 is a wasteful number, since it uses less digits than its factorization.

47002778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 350836.

The product of its (nonzero) digits is 21952, while the sum is 35.

The square root of 47002778 is about 6855.8572038805. The cubic root of 47002778 is about 360.8897180290.

The spelling of 47002778 in words is "forty-seven million, two thousand, seven hundred seventy-eight".