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20115024 = 243619677
BaseRepresentation
bin100110010111…
…0111001010000
31101211221121220
41030232321100
520122140044
61555045040
7332655246
oct114567120
941757556
1020115024
1110399796
1268a0780
1342238a7
142958796
151b75019
hex132ee50

20115024 has 40 divisors (see below), whose sum is σ = 52124640. Its totient is φ = 6684288.

The previous prime is 20115023. The next prime is 20115031. The reversal of 20115024 is 42051102.

It is a super-2 number, since 2×201150242 = 809228381041152, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20114994 and 20115012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20115023) 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, 29374 + ... + 30050.

It is an arithmetic number, because the mean of its divisors is an integer number (1303116).

Almost surely, 220115024 is an apocalyptic number.

20115024 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20115024 is an abundant number, since it is smaller than the sum of its proper divisors (32009616).

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

20115024 is a wasteful number, since it uses less digits than its factorization.

20115024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1307 (or 1301 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 20115024 is about 4484.9775919173. The cubic root of 20115024 is about 271.9611392002.

Adding to 20115024 its reverse (42051102), we get a palindrome (62166126).

It can be divided in two parts, 201 and 15024, that added together give a triangular number (15225 = T174).

The spelling of 20115024 in words is "twenty million, one hundred fifteen thousand, twenty-four".

Divisors: 1 2 3 4 6 8 12 16 24 48 619 677 1238 1354 1857 2031 2476 2708 3714 4062 4952 5416 7428 8124 9904 10832 14856 16248 29712 32496 419063 838126 1257189 1676252 2514378 3352504 5028756 6705008 10057512 20115024