28950749520 has 320 divisors, whose sum is σ = 116759384064. Its totient is φ = 5754101760.

The previous prime is 28950749501. The next prime is 28950749551. The reversal of 28950749520 is 2594705982.

It is a congruent number.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 390984 + ... + 459096.

Almost surely, 2^28950749520 is an apocalyptic number.

28950749520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28950749520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58379692032).

28950749520 is an abundant number, since it is smaller than the sum of its proper divisors (87808634544).

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

28950749520 is a wasteful number, since it uses less digits than its factorization.

28950749520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68170 (or 68164 counting only the distinct ones).

The product of its (nonzero) digits is 1814400, while the sum is 51.

The spelling of 28950749520 in words is "twenty-eight billion, nine hundred fifty million, seven hundred forty-nine thousand, five hundred twenty".