28553343 has 32 divisors (see below), whose sum is σ = 48018432. Its totient is φ = 14688000.

The previous prime is 28553341. The next prime is 28553347. The reversal of 28553343 is 34335582.

It is not a de Polignac number, because 28553343 - 2¹ = 28553341 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28553341) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9918 + ... + 12468.

It is an arithmetic number, because the mean of its divisors is an integer number (1500576).

Almost surely, 2^28553343 is an apocalyptic number.

28553343 is a deficient number, since it is larger than the sum of its proper divisors (19465089).

28553343 is a wasteful number, since it uses less digits than its factorization.

28553343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2615.

The product of its digits is 43200, while the sum is 33.

The square root of 28553343 is about 5343.5328201481. The cubic root of 28553343 is about 305.6461906677.

It can be divided in two parts, 285 and 53343, that added together give a triangular number (53628 = T₃₂₇).

The spelling of 28553343 in words is "twenty-eight million, five hundred fifty-three thousand, three hundred forty-three".