28415855 has 16 divisors (see below), whose sum is σ = 37001664. Its totient is φ = 20824320.

The previous prime is 28415843. The next prime is 28415867. The reversal of 28415855 is 55851482.

It is an interprime number because it is at equal distance from previous prime (28415843) and next prime (28415867).

It is not a de Polignac number, because 28415855 - 2¹⁰ = 28414831 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7310 + ... + 10500.

It is an arithmetic number, because the mean of its divisors is an integer number (2312604).

Almost surely, 2^28415855 is an apocalyptic number.

28415855 is a deficient number, since it is larger than the sum of its proper divisors (8585809).

28415855 is a wasteful number, since it uses less digits than its factorization.

28415855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3346.

The product of its digits is 64000, while the sum is 38.

The square root of 28415855 is about 5330.6523990971. The cubic root of 28415855 is about 305.1548259885.

The spelling of 28415855 in words is "twenty-eight million, four hundred fifteen thousand, eight hundred fifty-five".