3728533830 has 32 divisors (see below), whose sum is σ = 10226836224. Its totient is φ = 852236256.

The previous prime is 3728533813. The next prime is 3728533859. The reversal of 3728533830 is 383358273.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

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, 8877252 + ... + 8877671.

It is an arithmetic number, because the mean of its divisors is an integer number (319588632).

Almost surely, 2^3728533830 is an apocalyptic number.

3728533830 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

3728533830 is an abundant number, since it is smaller than the sum of its proper divisors (6498302394).

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

3728533830 is a wasteful number, since it uses less digits than its factorization.

3728533830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17754940.

The product of its (nonzero) digits is 362880, while the sum is 42.

The square root of 3728533830 is about 61061.7214791722. The cubic root of 3728533830 is about 1550.6461170319.

The spelling of 3728533830 in words is "three billion, seven hundred twenty-eight million, five hundred thirty-three thousand, eight hundred thirty".