28893501 has 24 divisors (see below), whose sum is σ = 51367680. Its totient is φ = 15240096.

The previous prime is 28893481. The next prime is 28893503. The reversal of 28893501 is 10539882.

It is not a de Polignac number, because 28893501 - 2¹⁴ = 28877117 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28893503) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16821 + ... + 18458.

It is an arithmetic number, because the mean of its divisors is an integer number (2140320).

Almost surely, 2^28893501 is an apocalyptic number.

28893501 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

28893501 is a deficient number, since it is larger than the sum of its proper divisors (22474179).

28893501 is a wasteful number, since it uses less digits than its factorization.

28893501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35305 (or 35302 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The square root of 28893501 is about 5375.2675282259. The cubic root of 28893501 is about 306.8551308199.

The spelling of 28893501 in words is "twenty-eight million, eight hundred ninety-three thousand, five hundred one".