Search a number
-
+
157203869 = 712698231
BaseRepresentation
bin10010101111010…
…11110110011101
3101221210210011112
421113223312131
5310221010434
623333231405
73616132214
oct1127536635
9357723145
10157203869
1180812659
1244792565
1326751b54
1416c4207b
15dc03dce
hex95ebd9d

157203869 has 8 divisors (see below), whose sum is σ = 160030080. Its totient is φ = 154394800.

The previous prime is 157203803. The next prime is 157203899. The reversal of 157203869 is 968302751.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 157203869 - 212 = 157199773 is a prime.

It is a super-2 number, since 2×1572038692 = 49426112857138322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157203899) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14984 + ... + 23214.

It is an arithmetic number, because the mean of its divisors is an integer number (20003760).

Almost surely, 2157203869 is an apocalyptic number.

It is an amenable number.

157203869 is a deficient number, since it is larger than the sum of its proper divisors (2826211).

157203869 is an equidigital number, since it uses as much as digits as its factorization.

157203869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8571.

The product of its (nonzero) digits is 90720, while the sum is 41.

The square root of 157203869 is about 12538.0967056408. The cubic root of 157203869 is about 539.7024755632.

The spelling of 157203869 in words is "one hundred fifty-seven million, two hundred three thousand, eight hundred sixty-nine".

Divisors: 1 71 269 8231 19099 584401 2214139 157203869