3548145728 has 56 divisors (see below), whose sum is σ = 7513137120. Its totient is φ = 1657635840.

The previous prime is 3548145707. The next prime is 3548145767. The reversal of 3548145728 is 8275418453.

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, 68783 + ... + 108753.

Almost surely, 2^3548145728 is an apocalyptic number.

3548145728 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3548145728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3756568560).

3548145728 is an abundant number, since it is smaller than the sum of its proper divisors (3964991392).

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

3548145728 is a wasteful number, since it uses less digits than its factorization.

3548145728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40075 (or 40065 counting only the distinct ones).

The product of its digits is 1075200, while the sum is 47.

The square root of 3548145728 is about 59566.3137016217. The cubic root of 3548145728 is about 1525.2246524546.

The spelling of 3548145728 in words is "three billion, five hundred forty-eight million, one hundred forty-five thousand, seven hundred twenty-eight".