28761407 has 2 divisors, whose sum is σ = 28761408. Its totient is φ = 28761406.

The previous prime is 28761401. The next prime is 28761413. The reversal of 28761407 is 70416782.

It is a happy number.

28761407 is nontrivially palindromic in base 15.

It is a balanced prime because it is at equal distance from previous prime (28761401) and next prime (28761413).

It is a cyclic number.

It is not a de Polignac number, because 28761407 - 2⁴ = 28761391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28761401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14380703 + 14380704.

It is an arithmetic number, because the mean of its divisors is an integer number (14380704).

Almost surely, 2^28761407 is an apocalyptic number.

28761407 is a deficient number, since it is larger than the sum of its proper divisors (1).

28761407 is an equidigital number, since it uses as much as digits as its factorization.

28761407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18816, while the sum is 35.

The square root of 28761407 is about 5362.9662501269. The cubic root of 28761407 is about 306.3867942541.

The spelling of 28761407 in words is "twenty-eight million, seven hundred sixty-one thousand, four hundred seven".