20380194252 has 72 divisors (see below), whose sum is σ = 59505827472. Its totient is φ = 5812531200.

The previous prime is 20380194209. The next prime is 20380194259. The reversal of 20380194252 is 25249108302.

It is a happy number.

20380194252 is a `hidden beast` number, since 20 + 380 + 1 + 9 + 4 + 252 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (20380194259) 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 23 ways as a sum of consecutive naturals, for example, 1506949 + ... + 1520412.

It is an arithmetic number, because the mean of its divisors is an integer number (826469826).

Almost surely, 2^20380194252 is an apocalyptic number.

20380194252 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20380194252 is an abundant number, since it is smaller than the sum of its proper divisors (39125633220).

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

20380194252 is a wasteful number, since it uses less digits than its factorization.

20380194252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3027399 (or 3027394 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The spelling of 20380194252 in words is "twenty billion, three hundred eighty million, one hundred ninety-four thousand, two hundred fifty-two".