20280419 has 2 divisors, whose sum is σ = 20280420. Its totient is φ = 20280418.

The previous prime is 20280413. The next prime is 20280433. The reversal of 20280419 is 91408202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20280419 - 2¹² = 20276323 is a prime.

It is a super-2 number, since 2×20280419² = 822590789631122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20280413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10140209 + 10140210.

It is an arithmetic number, because the mean of its divisors is an integer number (10140210).

Almost surely, 2^20280419 is an apocalyptic number.

20280419 is a deficient number, since it is larger than the sum of its proper divisors (1).

20280419 is an equidigital number, since it uses as much as digits as its factorization.

20280419 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 20280419 is about 4503.3786205470. The cubic root of 20280419 is about 272.7045021022.

The spelling of 20280419 in words is "twenty million, two hundred eighty thousand, four hundred nineteen".