28434027906 has 48 divisors (see below), whose sum is σ = 62038596984. Its totient is φ = 9411697152.

The previous prime is 28434027901. The next prime is 28434027961. The reversal of 28434027906 is 60972043482.

28434027906 is a `hidden beast` number, since 284 + 340 + 27 + 9 + 0 + 6 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 28350140625 + 83887281 = 168375^2 + 9159^2 .

It is not an unprimeable number, because it can be changed into a prime (28434027901) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8580906 + ... + 8584218.

Almost surely, 2^28434027906 is an apocalyptic number.

28434027906 is an abundant number, since it is smaller than the sum of its proper divisors (33604569078).

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

28434027906 is a wasteful number, since it uses less digits than its factorization.

28434027906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6515 (or 6512 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 45.

The spelling of 28434027906 in words is "twenty-eight billion, four hundred thirty-four million, twenty-seven thousand, nine hundred six".