245136100 has 144 divisors (see below), whose sum is σ = 629334720. Its totient is φ = 81907200.

The previous prime is 245136097. The next prime is 245136121. The reversal of 245136100 is 1631542.

It is a super-4 number, since 4×245136100⁴ (a number of 35 digits) contains 4444 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 773142 + ... + 773458.

It is an arithmetic number, because the mean of its divisors is an integer number (4370380).

Almost surely, 2^245136100 is an apocalyptic number.

245136100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 245136100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (314667360).

245136100 is an abundant number, since it is smaller than the sum of its proper divisors (384198620).

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

245136100 is a wasteful number, since it uses less digits than its factorization.

245136100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398 (or 391 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 245136100 is about 15656.8227939132. The cubic root of 245136100 is about 625.8483200440.

Adding to 245136100 its reverse (1631542), we get a palindrome (246767642).

The spelling of 245136100 in words is "two hundred forty-five million, one hundred thirty-six thousand, one hundred".