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23878020 = 22352913723
BaseRepresentation
bin101101100010…
…1100110000100
31122221010111010
41123011212010
522103044040
62211442220
7406650135
oct133054604
948833433
1023878020
1112529a01
127bb6370
134c4060a
143257c8c
152169e80
hex16c5984

23878020 has 48 divisors (see below), whose sum is σ = 69168960. Its totient is φ = 6147456.

The previous prime is 23877983. The next prime is 23878027. The reversal of 23878020 is 2087832.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (23878027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5122 + ... + 8601.

It is an arithmetic number, because the mean of its divisors is an integer number (1441020).

Almost surely, 223878020 is an apocalyptic number.

23878020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23878020 is an abundant number, since it is smaller than the sum of its proper divisors (45290940).

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

23878020 is a wasteful number, since it uses less digits than its factorization.

23878020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13764 (or 13762 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 23878020 is about 4886.5140949352. The cubic root of 23878020 is about 287.9604015773.

The spelling of 23878020 in words is "twenty-three million, eight hundred seventy-eight thousand, twenty".

Divisors: 1 2 3 4 5 6 10 12 15 20 29 30 58 60 87 116 145 174 290 348 435 580 870 1740 13723 27446 41169 54892 68615 82338 137230 164676 205845 274460 397967 411690 795934 823380 1193901 1591868 1989835 2387802 3979670 4775604 5969505 7959340 11939010 23878020