28232419 has 2 divisors, whose sum is σ = 28232420. Its totient is φ = 28232418.

The previous prime is 28232401. The next prime is 28232471. The reversal of 28232419 is 91423282.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28232419 - 2⁵ = 28232387 is a prime.

It is a super-2 number, since 2×28232419² = 1594138965183122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (28232489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14116209 + 14116210.

It is an arithmetic number, because the mean of its divisors is an integer number (14116210).

Almost surely, 2^28232419 is an apocalyptic number.

28232419 is a deficient number, since it is larger than the sum of its proper divisors (1).

28232419 is an equidigital number, since it uses as much as digits as its factorization.

28232419 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6912, while the sum is 31.

The square root of 28232419 is about 5313.4187676109. The cubic root of 28232419 is about 304.4967747624.

The spelling of 28232419 in words is "twenty-eight million, two hundred thirty-two thousand, four hundred nineteen".