20047392 has 48 divisors (see below), whose sum is σ = 58474080. Its totient is φ = 6682176.

The previous prime is 20047387. The next prime is 20047399. The reversal of 20047392 is 29374002.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (20047399) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10738 + ... + 12465.

It is an arithmetic number, because the mean of its divisors is an integer number (1218210).

Almost surely, 2^20047392 is an apocalyptic number.

It is an amenable number.

20047392 is an abundant number, since it is smaller than the sum of its proper divisors (38426688).

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

20047392 is a wasteful number, since it uses less digits than its factorization.

20047392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23222 (or 23208 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 20047392 is about 4477.4314065098. The cubic root of 20047392 is about 271.6559953319.

The spelling of 20047392 in words is "twenty million, forty-seven thousand, three hundred ninety-two".