28661695 has 8 divisors (see below), whose sum is σ = 34478640. Its totient is φ = 22872960.

The previous prime is 28661687. The next prime is 28661713. The reversal of 28661695 is 59616682.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28661695 - 2³ = 28661687 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4746 + ... + 8935.

It is an arithmetic number, because the mean of its divisors is an integer number (4309830).

Almost surely, 2^28661695 is an apocalyptic number.

28661695 is a deficient number, since it is larger than the sum of its proper divisors (5816945).

28661695 is a wasteful number, since it uses less digits than its factorization.

28661695 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14105.

The product of its digits is 155520, while the sum is 43.

The square root of 28661695 is about 5353.6618309340. The cubic root of 28661695 is about 306.0323167771.

It can be divided in two parts, 286 and 61695, that multiplied together give a triangular number (17644770 = T₅₉₄₀).

The spelling of 28661695 in words is "twenty-eight million, six hundred sixty-one thousand, six hundred ninety-five".