28612291550 has 12 divisors (see below), whose sum is σ = 53218862376. Its totient is φ = 11444916600.

The previous prime is 28612291537. The next prime is 28612291559. The reversal of 28612291550 is 5519221682.

It is a junction number, because it is equal to n+sod(n) for n = 28612291498 and 28612291507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28612291559) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 286122866 + ... + 286122965.

It is an arithmetic number, because the mean of its divisors is an integer number (4434905198).

Almost surely, 2^28612291550 is an apocalyptic number.

28612291550 is a deficient number, since it is larger than the sum of its proper divisors (24606570826).

28612291550 is a wasteful number, since it uses less digits than its factorization.

28612291550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 572245843 (or 572245838 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 41.

The spelling of 28612291550 in words is "twenty-eight billion, six hundred twelve million, two hundred ninety-one thousand, five hundred fifty".