89205642 has 12 divisors (see below), whose sum is σ = 193278930. Its totient is φ = 29735208.

The previous prime is 89205619. The next prime is 89205643. The reversal of 89205642 is 24650298.

It is a happy number.

89205642 is a `hidden beast` number, since 8 + 9 + 2 + 0 + 5 + 642 = 666.

It can be written as a sum of positive squares in only one way, i.e., 81703521 + 7502121 = 9039^2 + 2739^2 .

It is a junction number, because it is equal to n+sod(n) for n = 89205597 and 89205606.

It is not an unprimeable number, because it can be changed into a prime (89205643) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2477917 + ... + 2477952.

Almost surely, 2^89205642 is an apocalyptic number.

89205642 is an abundant number, since it is smaller than the sum of its proper divisors (104073288).

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

89205642 is a wasteful number, since it uses less digits than its factorization.

89205642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4955877 (or 4955874 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 89205642 is about 9444.8738477547. The cubic root of 89205642 is about 446.8181173754.

The spelling of 89205642 in words is "eighty-nine million, two hundred five thousand, six hundred forty-two".