20494512 has 40 divisors (see below), whose sum is σ = 58828080. Its totient is φ = 6831360.

The previous prime is 20494511. The next prime is 20494519. The reversal of 20494512 is 21549402.

20494512 is a `hidden beast` number, since 204 + 9 + 451 + 2 = 666.

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 (20494511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23289 + ... + 24152.

It is an arithmetic number, because the mean of its divisors is an integer number (1470702).

Almost surely, 2^20494512 is an apocalyptic number.

It is an amenable number.

20494512 is an abundant number, since it is smaller than the sum of its proper divisors (38333568).

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

20494512 is a wasteful number, since it uses less digits than its factorization.

20494512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47458 (or 47446 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 20494512 is about 4527.0864802873. The cubic root of 20494512 is about 273.6607590515.

It can be divided in two parts, 2049 and 4512, that added together give a 8-th power (6561 = 3⁸).

The spelling of 20494512 in words is "twenty million, four hundred ninety-four thousand, five hundred twelve".