28020151 has 2 divisors, whose sum is σ = 28020152. Its totient is φ = 28020150.

The previous prime is 28020107. The next prime is 28020169. The reversal of 28020151 is 15102082.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28020151 - 2⁷ = 28020023 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28029151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14010075 + 14010076.

It is an arithmetic number, because the mean of its divisors is an integer number (14010076).

Almost surely, 2^28020151 is an apocalyptic number.

28020151 is a deficient number, since it is larger than the sum of its proper divisors (1).

28020151 is an equidigital number, since it uses as much as digits as its factorization.

28020151 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 160, while the sum is 19.

The square root of 28020151 is about 5293.4063701930. The cubic root of 28020151 is about 303.7317253199.

The spelling of 28020151 in words is "twenty-eight million, twenty thousand, one hundred fifty-one".