4778972 has 24 divisors (see below), whose sum is σ = 9661680. Its totient is φ = 2044160.

The previous prime is 4778953. The next prime is 4778981. The reversal of 4778972 is 2798774.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 2447 + ... + 3942.

It is an arithmetic number, because the mean of its divisors is an integer number (402570).

Almost surely, 2^4778972 is an apocalyptic number.

It is an amenable number.

4778972 is an abundant number, since it is smaller than the sum of its proper divisors (4882708).

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

4778972 is a wasteful number, since it uses less digits than its factorization.

4778972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6421 (or 6419 counting only the distinct ones).

The product of its digits is 197568, while the sum is 44.

The square root of 4778972 is about 2186.0860001381. The cubic root of 4778972 is about 168.4398432776.

It can be divided in two parts, 477 and 8972, that added together give a palindrome (9449).

The spelling of 4778972 in words is "four million, seven hundred seventy-eight thousand, nine hundred seventy-two".