28531455 has 8 divisors (see below), whose sum is σ = 45650352. Its totient is φ = 15216768.

The previous prime is 28531427. The next prime is 28531463. The reversal of 28531455 is 55413582.

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

It is not a de Polignac number, because 28531455 - 2¹⁶ = 28465919 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 951034 + ... + 951063.

It is an arithmetic number, because the mean of its divisors is an integer number (5706294).

Almost surely, 2^28531455 is an apocalyptic number.

28531455 is a deficient number, since it is larger than the sum of its proper divisors (17118897).

28531455 is a wasteful number, since it uses less digits than its factorization.

28531455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1902105.

The product of its digits is 24000, while the sum is 33.

The square root of 28531455 is about 5341.4843442624. The cubic root of 28531455 is about 305.5680714555.

The spelling of 28531455 in words is "twenty-eight million, five hundred thirty-one thousand, four hundred fifty-five".