4028790280 has 16 divisors (see below), whose sum is σ = 9064778220. Its totient is φ = 1611516096.

The previous prime is 4028790277. The next prime is 4028790281. The reversal of 4028790280 is 820978204.

It can be written as a sum of positive squares in 2 ways, for example, as 3814050564 + 214739716 = 61758^2 + 14654^2 .

It is a super-2 number, since 2×4028790280² = 32462302240444956800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40), and also a Moran number because the ratio is a prime number: 100719757 = 4028790280 / (4 + 0 + 2 + 8 + 7 + 9 + 0 + 2 + 8 + 0).

It is not an unprimeable number, because it can be changed into a prime (4028790281) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50359839 + ... + 50359918.

Almost surely, 2^4028790280 is an apocalyptic number.

4028790280 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4028790280 is an abundant number, since it is smaller than the sum of its proper divisors (5035987940).

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

4028790280 is a wasteful number, since it uses less digits than its factorization.

4028790280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100719768 (or 100719764 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 4028790280 is about 63472.7522642590. The cubic root of 4028790280 is about 1591.2004278011.

The spelling of 4028790280 in words is "four billion, twenty-eight million, seven hundred ninety thousand, two hundred eighty".