28062521634 has 16 divisors (see below), whose sum is σ = 64142906688. Its totient is φ = 8017863312.

The previous prime is 28062521609. The next prime is 28062521657. The reversal of 28062521634 is 43612526082.

It is a junction number, because it is equal to n+sod(n) for n = 28062521592 and 28062521601.

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, 334077597 + ... + 334077680.

It is an arithmetic number, because the mean of its divisors is an integer number (4008931668).

Almost surely, 2^28062521634 is an apocalyptic number.

28062521634 is an abundant number, since it is smaller than the sum of its proper divisors (36080385054).

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

28062521634 is a wasteful number, since it uses less digits than its factorization.

28062521634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 668155289.

The product of its (nonzero) digits is 138240, while the sum is 39.

The spelling of 28062521634 in words is "twenty-eight billion, sixty-two million, five hundred twenty-one thousand, six hundred thirty-four".