28541644 has 12 divisors (see below), whose sum is σ = 50167600. Its totient is φ = 14208048.

The previous prime is 28541627. The next prime is 28541647. The reversal of 28541644 is 44614582.

It is a super-4 number, since 4×28541644⁴ (a number of 31 digits) contains 4444 as substring.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (28541647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14664 + ... + 16495.

Almost surely, 2^28541644 is an apocalyptic number.

It is an amenable number.

28541644 is a deficient number, since it is larger than the sum of its proper divisors (21625956).

28541644 is a wasteful number, since it uses less digits than its factorization.

28541644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31392 (or 31390 counting only the distinct ones).

The product of its digits is 30720, while the sum is 34.

The square root of 28541644 is about 5342.4380202301. The cubic root of 28541644 is about 305.6044414027.

The spelling of 28541644 in words is "twenty-eight million, five hundred forty-one thousand, six hundred forty-four".