245005040 has 40 divisors (see below), whose sum is σ = 651014880. Its totient is φ = 84001536.

The previous prime is 245005001. The next prime is 245005051. The reversal of 245005040 is 40500542.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 218195 + ... + 219314.

It is an arithmetic number, because the mean of its divisors is an integer number (16275372).

Almost surely, 2^245005040 is an apocalyptic number.

245005040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245005040 is an abundant number, since it is smaller than the sum of its proper divisors (406009840).

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

245005040 is a wasteful number, since it uses less digits than its factorization.

245005040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437529 (or 437523 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 20.

The square root of 245005040 is about 15652.6368385649. The cubic root of 245005040 is about 625.7367652751.

Adding to 245005040 its reverse (40500542), we get a palindrome (285505582).

The spelling of 245005040 in words is "two hundred forty-five million, five thousand, forty".