245820402 has 12 divisors (see below), whose sum is σ = 532610910. Its totient is φ = 81940128.

The previous prime is 245820401. The next prime is 245820439. The reversal of 245820402 is 204028542.

It is a happy number.

245820402 is a `hidden beast` number, since 2 + 458 + 204 + 0 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 218477961 + 27342441 = 14781^2 + 5229^2 .

It is not an unprimeable number, because it can be changed into a prime (245820401) 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, 6828327 + ... + 6828362.

Almost surely, 2^245820402 is an apocalyptic number.

245820402 is an abundant number, since it is smaller than the sum of its proper divisors (286790508).

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

245820402 is a wasteful number, since it uses less digits than its factorization.

245820402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13656697 (or 13656694 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 27.

The square root of 245820402 is about 15678.6607208652. The cubic root of 245820402 is about 626.4301347540.

Adding to 245820402 its reverse (204028542), we get a palindrome (449848944).

The spelling of 245820402 in words is "two hundred forty-five million, eight hundred twenty thousand, four hundred two".