4028061840 has 80 divisors (see below), whose sum is σ = 13622181696. Its totient is φ = 976499200.

The previous prime is 4028061833. The next prime is 4028061841. The reversal of 4028061840 is 481608204.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (4028061841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 760251 + ... + 765530.

Almost surely, 2^4028061840 is an apocalyptic number.

4028061840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4028061840 is an abundant number, since it is smaller than the sum of its proper divisors (9594119856).

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

4028061840 is a wasteful number, since it uses less digits than its factorization.

4028061840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1525808 (or 1525802 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 33.

The square root of 4028061840 is about 63467.0137945689. The cubic root of 4028061840 is about 1591.1045211042.

The spelling of 4028061840 in words is "four billion, twenty-eight million, sixty-one thousand, eight hundred forty".