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252023830 = 25137183959
BaseRepresentation
bin11110000010110…
…01010000010110
3122120020010200221
433001121100112
51004004230310
641001424554
76150111232
oct1701312026
9576203627
10252023830
1111a296263
127049b15a
13402a0936
14256855c2
15171d3ada
hexf059416

252023830 has 16 divisors (see below), whose sum is σ = 456956640. Its totient is φ = 100073152.

The previous prime is 252023789. The next prime is 252023887. The reversal of 252023830 is 38320252.

It is a junction number, because it is equal to n+sod(n) for n = 252023795 and 252023804.

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, 90610 + ... + 93349.

It is an arithmetic number, because the mean of its divisors is an integer number (28559790).

Almost surely, 2252023830 is an apocalyptic number.

252023830 is a deficient number, since it is larger than the sum of its proper divisors (204932810).

252023830 is a wasteful number, since it uses less digits than its factorization.

252023830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184103.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 252023830 is about 15875.2584230935. The cubic root of 252023830 is about 631.6558690388.

The spelling of 252023830 in words is "two hundred fifty-two million, twenty-three thousand, eight hundred thirty".

Divisors: 1 2 5 10 137 274 685 1370 183959 367918 919795 1839590 25202383 50404766 126011915 252023830