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28630754 = 217842081
BaseRepresentation
bin110110100110…
…1111011100010
31222212121000022
41231031323202
524312141004
62501353442
7465233405
oct155157342
958777008
1028630754
1115185789
129708882
135c15999
143b33d3c
1527a82be
hex1b4dee2

28630754 has 8 divisors (see below), whose sum is σ = 45472428. Its totient is φ = 13473280.

The previous prime is 28630717. The next prime is 28630757. The reversal of 28630754 is 45703682.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 22515025 + 6115729 = 4745^2 + 2473^2 .

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

It is not an unprimeable number, because it can be changed into a prime (28630757) 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, 421007 + ... + 421074.

Almost surely, 228630754 is an apocalyptic number.

28630754 is a deficient number, since it is larger than the sum of its proper divisors (16841674).

28630754 is a wasteful number, since it uses less digits than its factorization.

28630754 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 842100.

The product of its (nonzero) digits is 40320, while the sum is 35.

The square root of 28630754 is about 5350.7713462640. The cubic root of 28630754 is about 305.9221540056.

The spelling of 28630754 in words is "twenty-eight million, six hundred thirty thousand, seven hundred fifty-four".

Divisors: 1 2 17 34 842081 1684162 14315377 28630754