4978271928 has 64 divisors (see below), whose sum is σ = 14972256000. Its totient is φ = 1347501312.

The previous prime is 4978271923. The next prime is 4978271933. The reversal of 4978271928 is 8291728794.

It is an interprime number because it is at equal distance from previous prime (4978271923) and next prime (4978271933).

It is a super-2 number, since 2×4978271928² = 49566382778225674368, which contains 22 as substring.

It is a hoax number, since the sum of its digits (57) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4978271923) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 776613 + ... + 782996.

It is an arithmetic number, because the mean of its divisors is an integer number (233941500).

Almost surely, 2^4978271928 is an apocalyptic number.

It is an amenable number.

4978271928 is an abundant number, since it is smaller than the sum of its proper divisors (9993984072).

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

4978271928 is a wasteful number, since it uses less digits than its factorization.

4978271928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1559644 (or 1559640 counting only the distinct ones).

The product of its digits is 4064256, while the sum is 57.

The square root of 4978271928 is about 70556.8701686802. The cubic root of 4978271928 is about 1707.4953846447.

The spelling of 4978271928 in words is "four billion, nine hundred seventy-eight million, two hundred seventy-one thousand, nine hundred twenty-eight".