47402784 has 144 divisors (see below), whose sum is σ = 158505984. Its totient is φ = 13248000.

The previous prime is 47402779. The next prime is 47402801. The reversal of 47402784 is 48720474.

It is a tau number, because it is divible by the number of its divisors (144).

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 40609 + ... + 41759.

It is an arithmetic number, because the mean of its divisors is an integer number (1100736).

Almost surely, 2^47402784 is an apocalyptic number.

47402784 is a gapful number since it is divisible by the number (44) 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 47402784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79252992).

47402784 is an abundant number, since it is smaller than the sum of its proper divisors (111103200).

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

47402784 is a wasteful number, since it uses less digits than its factorization.

47402784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1191 (or 1180 counting only the distinct ones).

The product of its (nonzero) digits is 50176, while the sum is 36.

The square root of 47402784 is about 6884.9679737817. The cubic root of 47402784 is about 361.9105830045.

The spelling of 47402784 in words is "forty-seven million, four hundred two thousand, seven hundred eighty-four".