3845705280 has 56 divisors (see below), whose sum is σ = 12210117312. Its totient is φ = 1025521152.

The previous prime is 3845705267. The next prime is 3845705293. The reversal of 3845705280 is 825075483.

It is an interprime number because it is at equal distance from previous prime (3845705267) and next prime (3845705293).

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, 2002012 + ... + 2003931.

Almost surely, 2^3845705280 is an apocalyptic number.

3845705280 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3845705280 is an abundant number, since it is smaller than the sum of its proper divisors (8364412032).

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

3845705280 is a wasteful number, since it uses less digits than its factorization.

3845705280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4005963 (or 4005953 counting only the distinct ones).

The product of its (nonzero) digits is 268800, while the sum is 42.

The square root of 3845705280 is about 62013.7507332043. The cubic root of 3845705280 is about 1566.7222079801.

The spelling of 3845705280 in words is "three billion, eight hundred forty-five million, seven hundred five thousand, two hundred eighty".