28434513 has 8 divisors (see below), whose sum is σ = 38104000. Its totient is φ = 18860688.

The previous prime is 28434499. The next prime is 28434541. The reversal of 28434513 is 31543482.

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

It is not a de Polignac number, because 28434513 - 2¹² = 28430417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28434613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23218 + ... + 24411.

It is an arithmetic number, because the mean of its divisors is an integer number (4763000).

Almost surely, 2^28434513 is an apocalyptic number.

It is an amenable number.

28434513 is a deficient number, since it is larger than the sum of its proper divisors (9669487).

28434513 is a wasteful number, since it uses less digits than its factorization.

28434513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47831.

The product of its digits is 11520, while the sum is 30.

The square root of 28434513 is about 5332.4021791309. The cubic root of 28434513 is about 305.2216001310.

Adding to 28434513 its reverse (31543482), we get a palindrome (59977995).

The spelling of 28434513 in words is "twenty-eight million, four hundred thirty-four thousand, five hundred thirteen".