Search a number
-
+
14931020 = 2251357427
BaseRepresentation
bin111000111101…
…010001001100
31001002120111202
4320331101030
512310243040
61252005032
7240624446
oct70752114
931076452
1014931020
118478995
125000778
13312a130
141da9496
15149e015
hexe3d44c

14931020 has 24 divisors (see below), whose sum is σ = 33767664. Its totient is φ = 5512896.

The previous prime is 14931013. The next prime is 14931023. The reversal of 14931020 is 2013941.

14931020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 14930983 and 14931001.

It is not an unprimeable number, because it can be changed into a prime (14931023) 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, 28454 + ... + 28973.

It is an arithmetic number, because the mean of its divisors is an integer number (1406986).

Almost surely, 214931020 is an apocalyptic number.

14931020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

14931020 is an abundant number, since it is smaller than the sum of its proper divisors (18836644).

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

14931020 is a wasteful number, since it uses less digits than its factorization.

14931020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57449 (or 57447 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 14931020 is about 3864.0678047881. The cubic root of 14931020 is about 246.2425835416.

Adding to 14931020 its reverse (2013941), we get a palindrome (16944961).

The spelling of 14931020 in words is "fourteen million, nine hundred thirty-one thousand, twenty".

Divisors: 1 2 4 5 10 13 20 26 52 65 130 260 57427 114854 229708 287135 574270 746551 1148540 1493102 2986204 3732755 7465510 14931020