28950052690 has 32 divisors (see below), whose sum is σ = 56137331376. Its totient is φ = 10685675520.

The previous prime is 28950052669. The next prime is 28950052693. The reversal of 28950052690 is 9625005982.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 6699258801 + 22250793889 = 81849^2 + 149167^2 .

It is a super-2 number, since 2×28950052690² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28950052690.

It is not an unprimeable number, because it can be changed into a prime (28950052693) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 370054 + ... + 441406.

Almost surely, 2^28950052690 is an apocalyptic number.

28950052690 is a deficient number, since it is larger than the sum of its proper divisors (27187278686).

28950052690 is a wasteful number, since it uses less digits than its factorization.

28950052690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74494.

The product of its (nonzero) digits is 388800, while the sum is 46.

The spelling of 28950052690 in words is "twenty-eight billion, nine hundred fifty million, fifty-two thousand, six hundred ninety".