28861415 has 16 divisors (see below), whose sum is σ = 38498976. Its totient is φ = 20592000.

The previous prime is 28861381. The next prime is 28861439. The reversal of 28861415 is 51416882.

It is not a de Polignac number, because 28861415 - 2¹² = 28857319 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, 2036 + ... + 7865.

It is an arithmetic number, because the mean of its divisors is an integer number (2406186).

Almost surely, 2^28861415 is an apocalyptic number.

28861415 is a deficient number, since it is larger than the sum of its proper divisors (9637561).

28861415 is a wasteful number, since it uses less digits than its factorization.

28861415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9970.

The product of its digits is 15360, while the sum is 35.

The square root of 28861415 is about 5372.2821035385. The cubic root of 28861415 is about 306.7415020317.

The spelling of 28861415 in words is "twenty-eight million, eight hundred sixty-one thousand, four hundred fifteen".