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161430 = 2355381
BaseRepresentation
bin100111011010010110
322012102220
4213122112
520131210
63243210
71241433
oct473226
9265386
10161430
11100315
1279506
1358629
1442b8a
1532c70
hex27696

161430 has 16 divisors (see below), whose sum is σ = 387504. Its totient is φ = 43040.

The previous prime is 161411. The next prime is 161453. The reversal of 161430 is 34161.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2661 + ... + 2720.

It is an arithmetic number, because the mean of its divisors is an integer number (24219).

2161430 is an apocalyptic number.

161430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161430 is an abundant number, since it is smaller than the sum of its proper divisors (226074).

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

161430 is a wasteful number, since it uses less digits than its factorization.

161430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5391.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 161430 is about 401.7835238036. The cubic root of 161430 is about 54.4496069271.

Adding to 161430 its reverse (34161), we get a palindrome (195591).

The spelling of 161430 in words is "one hundred sixty-one thousand, four hundred thirty".

Divisors: 1 2 3 5 6 10 15 30 5381 10762 16143 26905 32286 53810 80715 161430