28401523529 has 8 divisors (see below), whose sum is σ = 28553525280. Its totient is φ = 28249572096.

The previous prime is 28401523523. The next prime is 28401523543. The reversal of 28401523529 is 92532510482.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28401523529 - 2²⁰ = 28400474953 is a prime.

It is a super-2 number, since 2×28401523529² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28401523523) 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, 1833314 + ... + 1848740.

It is an arithmetic number, because the mean of its divisors is an integer number (3569190660).

Almost surely, 2^28401523529 is an apocalyptic number.

It is an amenable number.

28401523529 is a deficient number, since it is larger than the sum of its proper divisors (152001751).

28401523529 is a wasteful number, since it uses less digits than its factorization.

28401523529 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25159.

The product of its (nonzero) digits is 172800, while the sum is 41.

The spelling of 28401523529 in words is "twenty-eight billion, four hundred one million, five hundred twenty-three thousand, five hundred twenty-nine".