4720978 has 16 divisors (see below), whose sum is σ = 7343424. Its totient is φ = 2274480.

The previous prime is 4720943. The next prime is 4720981. The reversal of 4720978 is 8790274.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9451 + ... + 9937.

It is an arithmetic number, because the mean of its divisors is an integer number (458964).

Almost surely, 2^4720978 is an apocalyptic number.

4720978 is a deficient number, since it is larger than the sum of its proper divisors (2622446).

4720978 is a wasteful number, since it uses less digits than its factorization.

4720978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 657.

The product of its (nonzero) digits is 28224, while the sum is 37.

The square root of 4720978 is about 2172.7811670760. The cubic root of 4720978 is about 167.7557154479.

It can be divided in two parts, 47 and 20978, that added together give a square (21025 = 145²).

The spelling of 4720978 in words is "four million, seven hundred twenty thousand, nine hundred seventy-eight".