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157142910 = 2359754001
BaseRepresentation
bin10010101110111…
…00111101111110
3101221200200112210
421113130331332
5310212033120
623332041250
73615456411
oct1127347576
9357620483
10157142910
1180780881
1244763226
1326730192
1416c27b78
15dbe0ce0
hex95dcf7e

157142910 has 32 divisors (see below), whose sum is σ = 381038112. Its totient is φ = 41472000.

The previous prime is 157142899. The next prime is 157142957. The reversal of 157142910 is 19241751.

157142910 is digitally balanced in base 3, 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 (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24091 + ... + 29910.

It is an arithmetic number, because the mean of its divisors is an integer number (11907441).

Almost surely, 2157142910 is an apocalyptic number.

157142910 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

157142910 is an abundant number, since it is smaller than the sum of its proper divisors (223895202).

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

157142910 is a wasteful number, since it uses less digits than its factorization.

157142910 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54108.

The product of its (nonzero) digits is 2520, while the sum is 30.

The square root of 157142910 is about 12535.6655188307. The cubic root of 157142910 is about 539.6327063375.

The spelling of 157142910 in words is "one hundred fifty-seven million, one hundred forty-two thousand, nine hundred ten".

Divisors: 1 2 3 5 6 10 15 30 97 194 291 485 582 970 1455 2910 54001 108002 162003 270005 324006 540010 810015 1620030 5238097 10476194 15714291 26190485 31428582 52380970 78571455 157142910