28642950 has 144 divisors (see below), whose sum is σ = 92025360. Its totient is φ = 6531840.

The previous prime is 28642931. The next prime is 28642963. The reversal of 28642950 is 5924682.

It is a happy number.

28642950 is a `hidden beast` number, since 2 + 8 + 642 + 9 + 5 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 65934 + ... + 66366.

It is an arithmetic number, because the mean of its divisors is an integer number (639065).

Almost surely, 2^28642950 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28642950, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46012680).

28642950 is an abundant number, since it is smaller than the sum of its proper divisors (63382410).

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

28642950 is a wasteful number, since it uses less digits than its factorization.

28642950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 468 (or 450 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 28642950 is about 5351.9108736974. The cubic root of 28642950 is about 305.9655862875.

It can be divided in two parts, 28642 and 950, that added together give a palindrome (29592).

The spelling of 28642950 in words is "twenty-eight million, six hundred forty-two thousand, nine hundred fifty".