Search a number
-
+
157752969 = 31122721059
BaseRepresentation
bin10010110011100…
…01111010001001
3101222211200101120
421121301322021
5310341043334
623353105453
73623610123
oct1131617211
9358750346
10157752969
1181058160
12449b8289
13268b4a6a
1416d46213
15dcb1949
hex9671e89

157752969 has 16 divisors (see below), whose sum is σ = 230480640. Its totient is φ = 95182160.

The previous prime is 157752937. The next prime is 157752971. The reversal of 157752969 is 969257751.

157752969 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 157752969 - 25 = 157752937 is a prime.

It is a super-2 number, since 2×1577529692 = 49771998456629922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (157752169) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3039 + ... + 18020.

It is an arithmetic number, because the mean of its divisors is an integer number (14405040).

Almost surely, 2157752969 is an apocalyptic number.

It is an amenable number.

157752969 is a deficient number, since it is larger than the sum of its proper divisors (72727671).

157752969 is a wasteful number, since it uses less digits than its factorization.

157752969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21300.

The product of its digits is 1190700, while the sum is 51.

The square root of 157752969 is about 12559.9748805481. The cubic root of 157752969 is about 540.3301239295.

The spelling of 157752969 in words is "one hundred fifty-seven million, seven hundred fifty-two thousand, nine hundred sixty-nine".

Divisors: 1 3 11 33 227 681 2497 7491 21059 63177 231649 694947 4780393 14341179 52584323 157752969