245009408 has 132 divisors (see below), whose sum is σ = 602063640. Its totient is φ = 99090432.

The previous prime is 245009393. The next prime is 245009411. The reversal of 245009408 is 804900542.

It is a super-2 number, since 2×245009408² = 120059220017020928, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 953216 + ... + 953472.

Almost surely, 2^245009408 is an apocalyptic number.

245009408 is a gapful number since it is divisible by the number (28) 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 245009408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (301031820).

245009408 is an abundant number, since it is smaller than the sum of its proper divisors (357054232).

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

245009408 is a wasteful number, since it uses less digits than its factorization.

245009408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310 (or 285 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 245009408 is about 15652.7763671497. The cubic root of 245009408 is about 625.7404838408.

The spelling of 245009408 in words is "two hundred forty-five million, nine thousand, four hundred eight".