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16130420 = 225806521
BaseRepresentation
bin111101100010…
…000101110100
31010100111202222
4331202011310
513112133140
61333421512
7254051315
oct75420564
933314688
1016130420
119118029
12549a898
13345a037
1421dc60c
1516395b5
hexf62174

16130420 has 12 divisors (see below), whose sum is σ = 33873924. Its totient is φ = 6452160.

The previous prime is 16130417. The next prime is 16130437. The reversal of 16130420 is 2403161.

16130420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 8797156 + 7333264 = 2966^2 + 2708^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 403241 + ... + 403280.

It is an arithmetic number, because the mean of its divisors is an integer number (2822827).

Almost surely, 216130420 is an apocalyptic number.

16130420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16130420 is an abundant number, since it is smaller than the sum of its proper divisors (17743504).

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

16130420 is a wasteful number, since it uses less digits than its factorization.

16130420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 806530 (or 806528 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 16130420 is about 4016.2694132740. The cubic root of 16130420 is about 252.6670201709.

Adding to 16130420 its reverse (2403161), we get a palindrome (18533581).

The spelling of 16130420 in words is "sixteen million, one hundred thirty thousand, four hundred twenty".

Divisors: 1 2 4 5 10 20 806521 1613042 3226084 4032605 8065210 16130420