245969172 has 72 divisors (see below), whose sum is σ = 633657024. Its totient is φ = 80436096.

The previous prime is 245969149. The next prime is 245969177. The reversal of 245969172 is 271969542.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245969177) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 785688 + ... + 786000.

It is an arithmetic number, because the mean of its divisors is an integer number (8800792).

Almost surely, 2^245969172 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 245969172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (316828512).

245969172 is an abundant number, since it is smaller than the sum of its proper divisors (387687852).

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

245969172 is a wasteful number, since it uses less digits than its factorization.

245969172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 669 (or 664 counting only the distinct ones).

The product of its digits is 272160, while the sum is 45.

The square root of 245969172 is about 15683.4043498215. The cubic root of 245969172 is about 626.5564806776.

It can be divided in two parts, 2459 and 69172, that added together give a triangular number (71631 = T₃₇₈).

The spelling of 245969172 in words is "two hundred forty-five million, nine hundred sixty-nine thousand, one hundred seventy-two".