245823156 has 36 divisors (see below), whose sum is σ = 622397412. Its totient is φ = 81807744.

The previous prime is 245823091. The next prime is 245823157. The reversal of 245823156 is 651328542.

245823156 is a `hidden beast` number, since 24 + 582 + 3 + 1 + 56 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 146023056 + 99800100 = 12084^2 + 9990^2 .

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

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

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

It is a self number, because there is not a number n which added to its sum of digits gives 245823156.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245823157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18280 + ... + 28736.

It is an arithmetic number, because the mean of its divisors is an integer number (17288817).

Almost surely, 2^245823156 is an apocalyptic number.

It is an amenable number.

245823156 is an abundant number, since it is smaller than the sum of its proper divisors (376574256).

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

245823156 is a wasteful number, since it uses less digits than its factorization.

245823156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11120 (or 11115 counting only the distinct ones).

The product of its digits is 57600, while the sum is 36.

The square root of 245823156 is about 15678.7485469983. The cubic root of 245823156 is about 626.4324741071.

The spelling of 245823156 in words is "two hundred forty-five million, eight hundred twenty-three thousand, one hundred fifty-six".