4641978 has 32 divisors (see below), whose sum is σ = 10302912. Its totient is φ = 1382400.

The previous prime is 4641919. The next prime is 4641991. The reversal of 4641978 is 8791464.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3450 + ... + 4602.

It is an arithmetic number, because the mean of its divisors is an integer number (321966).

Almost surely, 2^4641978 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4641978, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5151456).

4641978 is an abundant number, since it is smaller than the sum of its proper divisors (5660934).

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

4641978 is a wasteful number, since it uses less digits than its factorization.

4641978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1230.

The product of its digits is 48384, while the sum is 39.

The square root of 4641978 is about 2154.5250056567. The cubic root of 4641978 is about 166.8147155613.

It can be divided in two parts, 464 and 1978, that added together give a palindrome (2442).

The spelling of 4641978 in words is "four million, six hundred forty-one thousand, nine hundred seventy-eight".