4731978 has 16 divisors (see below), whose sum is σ = 9684576. Its totient is φ = 1540560.

The previous prime is 4731973. The next prime is 4731983. The reversal of 4731978 is 8791374.

It is an interprime number because it is at equal distance from previous prime (4731973) and next prime (4731983).

It is not an unprimeable number, because it can be changed into a prime (4731971) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8913 + ... + 9428.

It is an arithmetic number, because the mean of its divisors is an integer number (605286).

Almost surely, 2^4731978 is an apocalyptic number.

4731978 is an abundant number, since it is smaller than the sum of its proper divisors (4952598).

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

4731978 is a wasteful number, since it uses less digits than its factorization.

4731978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18389.

The product of its digits is 42336, while the sum is 39.

The square root of 4731978 is about 2175.3110122463. The cubic root of 4731978 is about 167.8859060930.

The spelling of 4731978 in words is "four million, seven hundred thirty-one thousand, nine hundred seventy-eight".