28772464 has 40 divisors (see below), whose sum is σ = 65773568. Its totient is φ = 11931840.

The previous prime is 28772453. The next prime is 28772467. The reversal of 28772464 is 46427782.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28772467) 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, 672 + ... + 7615.

Almost surely, 2^28772464 is an apocalyptic number.

It is an amenable number.

28772464 is an abundant number, since it is smaller than the sum of its proper divisors (37001104).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28772464 is a wasteful number, since it uses less digits than its factorization.

28772464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8333 (or 8327 counting only the distinct ones).

The product of its digits is 150528, while the sum is 40.

The square root of 28772464 is about 5363.9970171506. The cubic root of 28772464 is about 306.4260515449.

The spelling of 28772464 in words is "twenty-eight million, seven hundred seventy-two thousand, four hundred sixty-four".