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28526253 = 371358393
BaseRepresentation
bin110110011010…
…0011010101101
31222200021122220
41230310122231
524300320003
62455225553
7464316630
oct154643255
958607586
1028526253
1115114218
1296782b9
135baa252
143b07c17
152787353
hex1b346ad

28526253 has 8 divisors (see below), whose sum is σ = 43468608. Its totient is φ = 16300704.

The previous prime is 28526249. The next prime is 28526257. The reversal of 28526253 is 35262582.

It is an interprime number because it is at equal distance from previous prime (28526249) and next prime (28526257).

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

It is not a de Polignac number, because 28526253 - 22 = 28526249 is a prime.

It is a super-2 number, since 2×285262532 = 1627494220440018, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28526257) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 679176 + ... + 679217.

It is an arithmetic number, because the mean of its divisors is an integer number (5433576).

Almost surely, 228526253 is an apocalyptic number.

It is an amenable number.

28526253 is a deficient number, since it is larger than the sum of its proper divisors (14942355).

28526253 is a wasteful number, since it uses less digits than its factorization.

28526253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1358403.

The product of its digits is 28800, while the sum is 33.

The square root of 28526253 is about 5340.9973787674. The cubic root of 28526253 is about 305.5494994184.

The spelling of 28526253 in words is "twenty-eight million, five hundred twenty-six thousand, two hundred fifty-three".

Divisors: 1 3 7 21 1358393 4075179 9508751 28526253