245156400 has 90 divisors (see below), whose sum is σ = 850773300. Its totient is φ = 65374080.

The previous prime is 245156399. The next prime is 245156407. The reversal of 245156400 is 4651542.

245156400 is a `hidden beast` number, since 2 + 4 + 5 + 15 + 640 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (90).

It is not an unprimeable number, because it can be changed into a prime (245156407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 30450 + ... + 37649.

Almost surely, 2^245156400 is an apocalyptic number.

245156400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245156400 is an abundant number, since it is smaller than the sum of its proper divisors (605616900).

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

245156400 is a wasteful number, since it uses less digits than its factorization.

245156400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68123 (or 68109 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 245156400 is about 15657.4710601681. The cubic root of 245156400 is about 625.8655953049.

The spelling of 245156400 in words is "two hundred forty-five million, one hundred fifty-six thousand, four hundred".