Search a number
-
+
157430 = 25713173
BaseRepresentation
bin100110011011110110
321222221202
4212123312
520014210
63212502
71223660
oct463366
9258852
10157430
11a8309
1277132
1356870
1441530
15319a5
hex266f6

157430 has 32 divisors (see below), whose sum is σ = 350784. Its totient is φ = 49536.

The previous prime is 157429. The next prime is 157433. The reversal of 157430 is 34751.

It is a happy number.

157430 is nontrivially palindromic in base 9.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157433) 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, 824 + ... + 996.

It is an arithmetic number, because the mean of its divisors is an integer number (10962).

2157430 is an apocalyptic number.

157430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

157430 is an abundant number, since it is smaller than the sum of its proper divisors (193354).

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

157430 is a wasteful number, since it uses less digits than its factorization.

157430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200.

The product of its (nonzero) digits is 420, while the sum is 20.

The square root of 157430 is about 396.7744951481. The cubic root of 157430 is about 53.9961131176.

The spelling of 157430 in words is "one hundred fifty-seven thousand, four hundred thirty".

Divisors: 1 2 5 7 10 13 14 26 35 65 70 91 130 173 182 346 455 865 910 1211 1730 2249 2422 4498 6055 11245 12110 15743 22490 31486 78715 157430