136469428 has 6 divisors (see below), whose sum is σ = 238821506. Its totient is φ = 68234712.

The previous prime is 136469423. The next prime is 136469429. The reversal of 136469428 is 824964631.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 99161764 + 37307664 = 9958^2 + 6108^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136469423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17058675 + ... + 17058682.

Almost surely, 2^136469428 is an apocalyptic number.

It is an amenable number.

136469428 is a deficient number, since it is larger than the sum of its proper divisors (102352078).

136469428 is a wasteful number, since it uses less digits than its factorization.

136469428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34117361 (or 34117359 counting only the distinct ones).

The product of its digits is 248832, while the sum is 43.

The square root of 136469428 is about 11682.0130114634. The cubic root of 136469428 is about 514.8473208134.

The spelling of 136469428 in words is "one hundred thirty-six million, four hundred sixty-nine thousand, four hundred twenty-eight".