4923991728 has 40 divisors (see below), whose sum is σ = 14133681200. Its totient is φ = 1641330432.

The previous prime is 4923991703. The next prime is 4923991771. The reversal of 4923991728 is 8271993294.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5698633 + ... + 5699496.

It is an arithmetic number, because the mean of its divisors is an integer number (353342030).

Almost surely, 2^4923991728 is an apocalyptic number.

4923991728 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

4923991728 is an abundant number, since it is smaller than the sum of its proper divisors (9209689472).

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

4923991728 is a wasteful number, since it uses less digits than its factorization.

4923991728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11398146 (or 11398134 counting only the distinct ones).

The product of its digits is 1959552, while the sum is 54.

The square root of 4923991728 is about 70171.1602298266. The cubic root of 4923991728 is about 1701.2668444064.

The spelling of 4923991728 in words is "four billion, nine hundred twenty-three million, nine hundred ninety-one thousand, seven hundred twenty-eight".