28750326 has 36 divisors (see below), whose sum is σ = 63522396. Its totient is φ = 8668440.

The previous prime is 28750321. The next prime is 28750411. The reversal of 28750326 is 62305782.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28750321) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 144375 + ... + 144573.

It is an arithmetic number, because the mean of its divisors is an integer number (1764511).

Almost surely, 2^28750326 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28750326, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31761198).

28750326 is an abundant number, since it is smaller than the sum of its proper divisors (34772070).

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

28750326 is a wasteful number, since it uses less digits than its factorization.

28750326 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425 (or 215 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 28750326 is about 5361.9330469524. The cubic root of 28750326 is about 306.3474416572.

The spelling of 28750326 in words is "twenty-eight million, seven hundred fifty thousand, three hundred twenty-six".