28887532870 has 128 divisors (see below), whose sum is σ = 64657004544. Its totient is φ = 9077612544.

The previous prime is 28887532853. The next prime is 28887532871. The reversal of 28887532870 is 7823578882.

It is a super-3 number, since 3×28887532870³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28887532871) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3665254 + ... + 3673126.

It is an arithmetic number, because the mean of its divisors is an integer number (505132848).

Almost surely, 2^28887532870 is an apocalyptic number.

28887532870 is an abundant number, since it is smaller than the sum of its proper divisors (35769471674).

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

28887532870 is a wasteful number, since it uses less digits than its factorization.

28887532870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8006.

The product of its (nonzero) digits is 12042240, while the sum is 58.

The spelling of 28887532870 in words is "twenty-eight billion, eight hundred eighty-seven million, five hundred thirty-two thousand, eight hundred seventy".