28150994690 has 64 divisors (see below), whose sum is σ = 62418504960. Its totient is φ = 8901722880.

The previous prime is 28150994621. The next prime is 28150994699. The reversal of 28150994690 is 9649905182.

It is a super-2 number, since 2×28150994690² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28150994699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1105805 + ... + 1130975.

It is an arithmetic number, because the mean of its divisors is an integer number (975289140).

Almost surely, 2^28150994690 is an apocalyptic number.

28150994690 is an abundant number, since it is smaller than the sum of its proper divisors (34267510270).

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

28150994690 is a wasteful number, since it uses less digits than its factorization.

28150994690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26427.

The product of its (nonzero) digits is 1399680, while the sum is 53.

The spelling of 28150994690 in words is "twenty-eight billion, one hundred fifty million, nine hundred ninety-four thousand, six hundred ninety".