28760440 has 16 divisors (see below), whose sum is σ = 64711080. Its totient is φ = 11504160.

The previous prime is 28760437. The next prime is 28760443. The reversal of 28760440 is 4406782.

It is an interprime number because it is at equal distance from previous prime (28760437) and next prime (28760443).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28760443) 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, 359466 + ... + 359545.

Almost surely, 2^28760440 is an apocalyptic number.

28760440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28760440 is an abundant number, since it is smaller than the sum of its proper divisors (35950640).

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

28760440 is a wasteful number, since it uses less digits than its factorization.

28760440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 719022 (or 719018 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 31.

The square root of 28760440 is about 5362.8760940376. The cubic root of 28760440 is about 306.3833604936.

The spelling of 28760440 in words is "twenty-eight million, seven hundred sixty thousand, four hundred forty".