245644100 has 36 divisors (see below), whose sum is σ = 574054404. Its totient is φ = 90698880.

The previous prime is 245643991. The next prime is 245644111. The reversal of 245644100 is 1446542.

It can be written as a sum of positive squares in 6 ways, for example, as 38514436 + 207129664 = 6206^2 + 14392^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a self number, because there is not a number n which added to its sum of digits gives 245644100.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 93179 + ... + 95778.

Almost surely, 2^245644100 is an apocalyptic number.

245644100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245644100 is an abundant number, since it is smaller than the sum of its proper divisors (328410304).

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

245644100 is a wasteful number, since it uses less digits than its factorization.

245644100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188984 (or 188977 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 245644100 is about 15673.0373571940. The cubic root of 245644100 is about 626.2803407066.

The spelling of 245644100 in words is "two hundred forty-five million, six hundred forty-four thousand, one hundred".