245199760 has 80 divisors (see below), whose sum is σ = 628334784. Its totient is φ = 88413696.

The previous prime is 245199743. The next prime is 245199761. The reversal of 245199760 is 67991542.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (43).

It is not an unprimeable number, because it can be changed into a prime (245199761) 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, 41979 + ... + 47461.

Almost surely, 2^245199760 is an apocalyptic number.

245199760 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 245199760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (314167392).

245199760 is an abundant number, since it is smaller than the sum of its proper divisors (383135024).

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

245199760 is a wasteful number, since it uses less digits than its factorization.

245199760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5552 (or 5546 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 43.

The square root of 245199760 is about 15658.8556414573. The cubic root of 245199760 is about 625.9024913876.

The spelling of 245199760 in words is "two hundred forty-five million, one hundred ninety-nine thousand, seven hundred sixty".