28429077 has 32 divisors (see below), whose sum is σ = 41287680. Its totient is φ = 17357760.

The previous prime is 28429067. The next prime is 28429087. The reversal of 28429077 is 77092482.

It is an interprime number because it is at equal distance from previous prime (28429067) and next prime (28429087).

It is not a de Polignac number, because 28429077 - 2¹⁰ = 28428053 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28429067) 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 in 31 ways as a sum of consecutive naturals, for example, 223788 + ... + 223914.

It is an arithmetic number, because the mean of its divisors is an integer number (1290240).

Almost surely, 2^28429077 is an apocalyptic number.

It is an amenable number.

28429077 is a deficient number, since it is larger than the sum of its proper divisors (12858603).

28429077 is a wasteful number, since it uses less digits than its factorization.

28429077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273.

The product of its (nonzero) digits is 56448, while the sum is 39.

The square root of 28429077 is about 5331.8924407756. The cubic root of 28429077 is about 305.2021485305.

The spelling of 28429077 in words is "twenty-eight million, four hundred twenty-nine thousand, seventy-seven".