245820136 has 64 divisors (see below), whose sum is σ = 515548800. Its totient is φ = 109283328.

The previous prime is 245820131. The next prime is 245820139. The reversal of 245820136 is 631028542.

It is a junction number, because it is equal to n+sod(n) for n = 245820098 and 245820107.

It is not an unprimeable number, because it can be changed into a prime (245820131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 277951 + ... + 278833.

It is an arithmetic number, because the mean of its divisors is an integer number (8055450).

Almost surely, 2^245820136 is an apocalyptic number.

It is an amenable number.

245820136 is an abundant number, since it is smaller than the sum of its proper divisors (269728664).

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

245820136 is a wasteful number, since it uses less digits than its factorization.

245820136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1018 (or 1014 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 245820136 is about 15678.6522379955. The cubic root of 245820136 is about 626.4299088025.

Adding to 245820136 its reverse (631028542), we get a palindrome (876848678).

The spelling of 245820136 in words is "two hundred forty-five million, eight hundred twenty thousand, one hundred thirty-six".