3728026775820 has 48 divisors (see below), whose sum is σ = 10438733668608. Its totient is φ = 994115835840.

The previous prime is 3728026775791. The next prime is 3728026775903. The reversal of 3728026775820 is 285776208273.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1738825 + ... + 3237215.

It is an arithmetic number, because the mean of its divisors is an integer number (217473618096).

Almost surely, 2^{3728026775820} is an apocalyptic number.

3728026775820 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3728026775820 is an abundant number, since it is smaller than the sum of its proper divisors (6710706892788).

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

3728026775820 is a wasteful number, since it uses less digits than its factorization.

3728026775820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1539870 (or 1539868 counting only the distinct ones).

The product of its (nonzero) digits is 15805440, while the sum is 57.

The spelling of 3728026775820 in words is "three trillion, seven hundred twenty-eight billion, twenty-six million, seven hundred seventy-five thousand, eight hundred twenty".