245249388 has 18 divisors (see below), whose sum is σ = 619936044. Its totient is φ = 81749784.

The previous prime is 245249387. The next prime is 245249393. The reversal of 245249388 is 883942542.

245249388 is a `hidden beast` number, since 24 + 5 + 249 + 388 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (245249383) 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, 3406206 + ... + 3406277.

Almost surely, 2^245249388 is an apocalyptic number.

It is an amenable number.

245249388 is an abundant number, since it is smaller than the sum of its proper divisors (374686656).

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

245249388 is a wasteful number, since it uses less digits than its factorization.

245249388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6812493 (or 6812488 counting only the distinct ones).

The product of its digits is 552960, while the sum is 45.

The square root of 245249388 is about 15660.4402236974. The cubic root of 245249388 is about 625.9447157267.

The spelling of 245249388 in words is "two hundred forty-five million, two hundred forty-nine thousand, three hundred eighty-eight".