1363525728 has 48 divisors (see below), whose sum is σ = 3767641920. Its totient is φ = 430586496.

The previous prime is 1363525727. The next prime is 1363525729. The reversal of 1363525728 is 8275253631.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1363525727) and next prime (1363525729).

It is a tau number, because it is divible by the number of its divisors (48).

It is a self number, because there is not a number n which added to its sum of digits gives 1363525728.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1363525727) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 371950 + ... + 375597.

It is an arithmetic number, because the mean of its divisors is an integer number (78492540).

Almost surely, 2^1363525728 is an apocalyptic number.

It is an amenable number.

1363525728 is an abundant number, since it is smaller than the sum of its proper divisors (2404116192).

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

1363525728 is a wasteful number, since it uses less digits than its factorization.

1363525728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 747579 (or 747571 counting only the distinct ones).

The product of its digits is 302400, while the sum is 42.

The square root of 1363525728 is about 36925.9492498162. The cubic root of 1363525728 is about 1108.8882432389. Note that the first 3 decimals are identical.

The spelling of 1363525728 in words is "one billion, three hundred sixty-three million, five hundred twenty-five thousand, seven hundred twenty-eight".