28972350 has 96 divisors (see below), whose sum is σ = 87137280. Its totient is φ = 7020000.

The previous prime is 28972319. The next prime is 28972367. The reversal of 28972350 is 5327982.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 13875 + ... + 15825.

It is an arithmetic number, because the mean of its divisors is an integer number (907680).

Almost surely, 2^28972350 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28972350, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43568640).

28972350 is an abundant number, since it is smaller than the sum of its proper divisors (58164930).

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

28972350 is a wasteful number, since it uses less digits than its factorization.

28972350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1983 (or 1972 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 28972350 is about 5382.5969568601. The cubic root of 28972350 is about 307.1340083469.

The spelling of 28972350 in words is "twenty-eight million, nine hundred seventy-two thousand, three hundred fifty".