28546949 has 4 divisors (see below), whose sum is σ = 30049440. Its totient is φ = 27044460.

The previous prime is 28546919. The next prime is 28546967. The reversal of 28546949 is 94964582.

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, and also an emirpimes, since its reverse is a distinct semiprime: 94964582 = 2 ⋅47482291.

It is a cyclic number.

It is not a de Polignac number, because 28546949 - 2¹² = 28542853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28546919) 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, 751217 + ... + 751254.

It is an arithmetic number, because the mean of its divisors is an integer number (7512360).

Almost surely, 2^28546949 is an apocalyptic number.

It is an amenable number.

28546949 is a deficient number, since it is larger than the sum of its proper divisors (1502491).

28546949 is a wasteful number, since it uses less digits than its factorization.

28546949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1502490.

The product of its digits is 622080, while the sum is 47.

The square root of 28546949 is about 5342.9344933285. The cubic root of 28546949 is about 305.6233743360.

The spelling of 28546949 in words is "twenty-eight million, five hundred forty-six thousand, nine hundred forty-nine".