28822461 has 4 divisors (see below), whose sum is σ = 38429952. Its totient is φ = 19214972.

The previous prime is 28822459. The next prime is 28822481. The reversal of 28822461 is 16422882.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 28822461 - 2¹ = 28822459 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28822481) 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, 4803741 + ... + 4803746.

It is an arithmetic number, because the mean of its divisors is an integer number (9607488).

Almost surely, 2^28822461 is an apocalyptic number.

It is an amenable number.

28822461 is a deficient number, since it is larger than the sum of its proper divisors (9607491).

28822461 is an equidigital number, since it uses as much as digits as its factorization.

28822461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9607490.

The product of its digits is 12288, while the sum is 33.

The square root of 28822461 is about 5368.6554182588. The cubic root of 28822461 is about 306.6034377887.

The spelling of 28822461 in words is "twenty-eight million, eight hundred twenty-two thousand, four hundred sixty-one".