245125728 has 36 divisors (see below), whose sum is σ = 697077108. Its totient is φ = 81708480.

The previous prime is 245125717. The next prime is 245125729. The reversal of 245125728 is 827521542.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 245125692 and 245125701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245125729) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 425278 + ... + 425853.

It is an arithmetic number, because the mean of its divisors is an integer number (19363253).

Almost surely, 2^245125728 is an apocalyptic number.

It is an amenable number.

245125728 is an abundant number, since it is smaller than the sum of its proper divisors (451951380).

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

245125728 is a wasteful number, since it uses less digits than its factorization.

245125728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 851147 (or 851136 counting only the distinct ones).

The product of its digits is 44800, while the sum is 36.

The square root of 245125728 is about 15656.4915610107. The cubic root of 245125728 is about 625.8394931239.

The spelling of 245125728 in words is "two hundred forty-five million, one hundred twenty-five thousand, seven hundred twenty-eight".