3847547628 has 90 divisors (see below), whose sum is σ = 10232678148. Its totient is φ = 1260372960.

The previous prime is 3847547621. The next prime is 3847547629. The reversal of 3847547628 is 8267457483.

3847547628 is a `hidden beast` number, since 3 + 8 + 4 + 7 + 5 + 4 + 7 + 628 = 666.

It is a super-3 number, since 3×3847547628³ (a number of 30 digits) contains 333 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (3847547621) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 9138858 + ... + 9139278.

Almost surely, 2^3847547628 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3847547628, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5116339074).

3847547628 is an abundant number, since it is smaller than the sum of its proper divisors (6385130520).

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

3847547628 is an equidigital number, since it uses as much as digits as its factorization.

3847547628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 925 (or 493 counting only the distinct ones).

The product of its digits is 9031680, while the sum is 54.

The square root of 3847547628 is about 62028.6033052494. The cubic root of 3847547628 is about 1566.9723560029.

The spelling of 3847547628 in words is "three billion, eight hundred forty-seven million, five hundred forty-seven thousand, six hundred twenty-eight".