3524665728 has 64 divisors (see below), whose sum is σ = 9769478400. Its totient is φ = 1123803648.

The previous prime is 3524665693. The next prime is 3524665787. The reversal of 3524665728 is 8275664253.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

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, 190708 + ... + 208371.

It is an arithmetic number, because the mean of its divisors is an integer number (152648100).

Almost surely, 2^3524665728 is an apocalyptic number.

It is an amenable number.

3524665728 is an abundant number, since it is smaller than the sum of its proper divisors (6244812672).

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

3524665728 is a wasteful number, since it uses less digits than its factorization.

3524665728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399119 (or 399107 counting only the distinct ones).

The product of its digits is 2419200, while the sum is 48.

The square root of 3524665728 is about 59368.8952903791. The cubic root of 3524665728 is about 1521.8527914224.

The spelling of 3524665728 in words is "three billion, five hundred twenty-four million, six hundred sixty-five thousand, seven hundred twenty-eight".