28922407 has 2 divisors, whose sum is σ = 28922408. Its totient is φ = 28922406.

The previous prime is 28922371. The next prime is 28922441. The reversal of 28922407 is 70422982.

It is an a-pointer prime, because the next prime (28922441) can be obtained adding 28922407 to its sum of digits (34).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28922407 - 2¹⁵ = 28889639 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28922447) 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, 14461203 + 14461204.

It is an arithmetic number, because the mean of its divisors is an integer number (14461204).

Almost surely, 2^28922407 is an apocalyptic number.

28922407 is a deficient number, since it is larger than the sum of its proper divisors (1).

28922407 is an equidigital number, since it uses as much as digits as its factorization.

28922407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 28922407 is about 5377.9556524761. The cubic root of 28922407 is about 306.9574260053.

The spelling of 28922407 in words is "twenty-eight million, nine hundred twenty-two thousand, four hundred seven".