4028978723 has 8 divisors (see below), whose sum is σ = 5023142400. Its totient is φ = 3139463880.

The previous prime is 4028978689. The next prime is 4028978741. The reversal of 4028978723 is 3278798204.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4028978723 - 2⁸ = 4028978467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4028978123) 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, 26162123 + ... + 26162276.

It is an arithmetic number, because the mean of its divisors is an integer number (627892800).

Almost surely, 2^4028978723 is an apocalyptic number.

4028978723 is a deficient number, since it is larger than the sum of its proper divisors (994163677).

4028978723 is a wasteful number, since it uses less digits than its factorization.

4028978723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52324417.

The product of its (nonzero) digits is 1354752, while the sum is 50.

The square root of 4028978723 is about 63474.2366870213. The cubic root of 4028978723 is about 1591.2252363984.

The spelling of 4028978723 in words is "four billion, twenty-eight million, nine hundred seventy-eight thousand, seven hundred twenty-three".