28402602550 has 36 divisors (see below), whose sum is σ = 61453962900. Its totient is φ = 9738034320.

The previous prime is 28402602541. The next prime is 28402602583. The reversal of 28402602550 is 5520620482.

It is a super-3 number, since 3×28402602550³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 5794000 + ... + 5798899.

It is an arithmetic number, because the mean of its divisors is an integer number (1707054525).

Almost surely, 2^28402602550 is an apocalyptic number.

28402602550 is an abundant number, since it is smaller than the sum of its proper divisors (33051360350).

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

28402602550 is a wasteful number, since it uses less digits than its factorization.

28402602550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11592925 (or 11592913 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 34.

The spelling of 28402602550 in words is "twenty-eight billion, four hundred two million, six hundred two thousand, five hundred fifty".