245209912 has 8 divisors (see below), whose sum is σ = 459768600. Its totient is φ = 122604952.

The previous prime is 245209903. The next prime is 245209919. The reversal of 245209912 is 219902542.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245209919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15325612 + ... + 15325627.

It is an arithmetic number, because the mean of its divisors is an integer number (57471075).

Almost surely, 2^245209912 is an apocalyptic number.

It is an amenable number.

245209912 is a deficient number, since it is larger than the sum of its proper divisors (214558688).

245209912 is a wasteful number, since it uses less digits than its factorization.

245209912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30651245 (or 30651241 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 245209912 is about 15659.1797997213. The cubic root of 245209912 is about 625.9111293439.

The spelling of 245209912 in words is "two hundred forty-five million, two hundred nine thousand, nine hundred twelve".