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28524260 = 2251426213
BaseRepresentation
bin110110011001…
…1111011100100
31222200011221002
41230303323210
524300234020
62455212432
7464311052
oct154637344
958604832
1028524260
1115112776
129677118
135ba937b
143b071d2
152786975
hex1b33ee4

28524260 has 12 divisors (see below), whose sum is σ = 59900988. Its totient is φ = 11409696.

The previous prime is 28524259. The next prime is 28524277. The reversal of 28524260 is 6242582.

It can be written as a sum of positive squares in 2 ways, for example, as 7529536 + 20994724 = 2744^2 + 4582^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 713087 + ... + 713126.

It is an arithmetic number, because the mean of its divisors is an integer number (4991749).

Almost surely, 228524260 is an apocalyptic number.

28524260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28524260 is an abundant number, since it is smaller than the sum of its proper divisors (31376728).

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

28524260 is a wasteful number, since it uses less digits than its factorization.

28524260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1426222 (or 1426220 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 29.

The square root of 28524260 is about 5340.8107998692. The cubic root of 28524260 is about 305.5423834665.

It can be divided in two parts, 28 and 524260, that added together give a 19-th power (524288 = 219).

The spelling of 28524260 in words is "twenty-eight million, five hundred twenty-four thousand, two hundred sixty".

Divisors: 1 2 4 5 10 20 1426213 2852426 5704852 7131065 14262130 28524260