28798949 has 8 divisors (see below), whose sum is σ = 29886912. Its totient is φ = 27730080.

The previous prime is 28798937. The next prime is 28798997. The reversal of 28798949 is 94989782.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 28798949 - 2¹² = 28794853 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28798894 and 28798903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28798849) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1664 + ... + 7769.

It is an arithmetic number, because the mean of its divisors is an integer number (3735864).

Almost surely, 2^28798949 is an apocalyptic number.

It is an amenable number.

28798949 is a deficient number, since it is larger than the sum of its proper divisors (1087963).

28798949 is an equidigital number, since it uses as much as digits as its factorization.

28798949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9547.

The product of its digits is 2612736, while the sum is 56.

The square root of 28798949 is about 5366.4652239626. The cubic root of 28798949 is about 306.5200442490.

The spelling of 28798949 in words is "twenty-eight million, seven hundred ninety-eight thousand, nine hundred forty-nine".