28850501 has 2 divisors, whose sum is σ = 28850502. Its totient is φ = 28850500.

The previous prime is 28850489. The next prime is 28850509. The reversal of 28850501 is 10505882.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16240900 + 12609601 = 4030^2 + 3551^2 .

It is a cyclic number.

It is not a de Polignac number, because 28850501 - 2²² = 24656197 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28850509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14425250 + 14425251.

It is an arithmetic number, because the mean of its divisors is an integer number (14425251).

Almost surely, 2^28850501 is an apocalyptic number.

It is an amenable number.

28850501 is a deficient number, since it is larger than the sum of its proper divisors (1).

28850501 is an equidigital number, since it uses as much as digits as its factorization.

28850501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3200, while the sum is 29.

The square root of 28850501 is about 5371.2662380485. The cubic root of 28850501 is about 306.7028321925.

The spelling of 28850501 in words is "twenty-eight million, eight hundred fifty thousand, five hundred one".