28486446 has 8 divisors (see below), whose sum is σ = 56972904. Its totient is φ = 9495480.

The previous prime is 28486433. The next prime is 28486501. The reversal of 28486446 is 64468482.

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

28486446 is an admirable number.

It is a super-2 number, since 2×28486446² = 1622955211421832, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28486398 and 28486407.

It is a congruent 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, 2373865 + ... + 2373876.

It is an arithmetic number, because the mean of its divisors is an integer number (7121613).

Almost surely, 2^28486446 is an apocalyptic number.

28486446 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.

28486446 is a wasteful number, since it uses less digits than its factorization.

28486446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4747746.

The product of its digits is 294912, while the sum is 42.

The square root of 28486446 is about 5337.2695266400. The cubic root of 28486446 is about 305.4073067635.

The spelling of 28486446 in words is "twenty-eight million, four hundred eighty-six thousand, four hundred forty-six".