28417386 has 8 divisors (see below), whose sum is σ = 56834784. Its totient is φ = 9472460.

The previous prime is 28417309. The next prime is 28417427. The reversal of 28417386 is 68371482.

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

28417386 is an admirable number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2368110 + ... + 2368121.

It is an arithmetic number, because the mean of its divisors is an integer number (7104348).

Almost surely, 2^28417386 is an apocalyptic number.

28417386 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28417386 is a wasteful number, since it uses less digits than its factorization.

28417386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4736236.

The product of its digits is 64512, while the sum is 39.

The square root of 28417386 is about 5330.7960005988. The cubic root of 28417386 is about 305.1603063051.

The spelling of 28417386 in words is "twenty-eight million, four hundred seventeen thousand, three hundred eighty-six".