Search a number
-
+
1230201148 = 221131901907
BaseRepresentation
bin100100101010011…
…0110000100111100
310011201211200201111
41021110312010330
510004412414043
6322023251404
742325352161
oct11124660474
93151750644
101230201148
11581464370
122a3ba9b64
13167b39b97
14b9552068
157300409d
hex4953613c

1230201148 has 24 divisors (see below), whose sum is σ = 2424328704. Its totient is φ = 541143600.

The previous prime is 1230201143. The next prime is 1230201163. The reversal of 1230201148 is 8411020321.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1230201143) 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, 449590 + ... + 452317.

It is an arithmetic number, because the mean of its divisors is an integer number (101013696).

Almost surely, 21230201148 is an apocalyptic number.

It is an amenable number.

1230201148 is a deficient number, since it is larger than the sum of its proper divisors (1194127556).

1230201148 is a wasteful number, since it uses less digits than its factorization.

1230201148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 901953 (or 901951 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 1230201148 is about 35074.2234126431. The cubic root of 1230201148 is about 1071.4996725421.

Adding to 1230201148 its reverse (8411020321), we get a palindrome (9641221469).

The spelling of 1230201148 in words is "one billion, two hundred thirty million, two hundred one thousand, one hundred forty-eight".

Divisors: 1 2 4 11 22 31 44 62 124 341 682 1364 901907 1803814 3607628 9920977 19841954 27959117 39683908 55918234 111836468 307550287 615100574 1230201148