20049768 has 40 divisors (see below), whose sum is σ = 56159730. Its totient is φ = 6683040.

The previous prime is 20049763. The next prime is 20049773. The reversal of 20049768 is 86794002.

It is an interprime number because it is at equal distance from previous prime (20049763) and next prime (20049773).

It can be written as a sum of positive squares in only one way, i.e., 18507204 + 1542564 = 4302^2 + 1242^2 .

It is a super-3 number, since 3×20049768³ (a number of 23 digits) contains 333 as substring.

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 (20049763) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 14823 + ... + 16118.

Almost surely, 2^20049768 is an apocalyptic number.

It is an amenable number.

20049768 is an abundant number, since it is smaller than the sum of its proper divisors (36109962).

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

20049768 is a wasteful number, since it uses less digits than its factorization.

20049768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30959 (or 30946 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 20049768 is about 4477.6967293465. The cubic root of 20049768 is about 271.6667270545. Note that the first 3 decimals are identical.

The spelling of 20049768 in words is "twenty million, forty-nine thousand, seven hundred sixty-eight".