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56002830 = 23513373881
BaseRepresentation
bin1101010110100…
…0100100001110
310220101020102220
43111220210032
5103314042310
65320200210
71250005362
oct325504416
9126336386
1056002830
1129680834
1216909066
13b7aa790
14761b2a2
154db3670
hex356890e

56002830 has 64 divisors (see below), whose sum is σ = 148696128. Its totient is φ = 13409280.

The previous prime is 56002789. The next prime is 56002831. The reversal of 56002830 is 3820065.

It is a self number, because there is not a number n which added to its sum of digits gives 56002830.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56002831) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12490 + ... + 16370.

It is an arithmetic number, because the mean of its divisors is an integer number (2323377).

Almost surely, 256002830 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56002830, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74348064).

56002830 is an abundant number, since it is smaller than the sum of its proper divisors (92693298).

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

56002830 is a wasteful number, since it uses less digits than its factorization.

56002830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3941.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 56002830 is about 7483.5038584877. The cubic root of 56002830 is about 382.5926812022.

Adding to 56002830 its reverse (3820065), we get a palindrome (59822895).

The spelling of 56002830 in words is "fifty-six million, two thousand, eight hundred thirty".

Divisors: 1 2 3 5 6 10 13 15 26 30 37 39 65 74 78 111 130 185 195 222 370 390 481 555 962 1110 1443 2405 2886 3881 4810 7215 7762 11643 14430 19405 23286 38810 50453 58215 100906 116430 143597 151359 252265 287194 302718 430791 504530 717985 756795 861582 1435970 1513590 1866761 2153955 3733522 4307910 5600283 9333805 11200566 18667610 28001415 56002830