20763149 has 8 divisors (see below), whose sum is σ = 23381760. Its totient is φ = 18266400.

The previous prime is 20763139. The next prime is 20763157. The reversal of 20763149 is 94136702.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20763149 is a prime.

It is a super-2 number, since 2×20763149² = 862216712792402, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20763139) 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, 30104 + ... + 30785.

It is an arithmetic number, because the mean of its divisors is an integer number (2922720).

Almost surely, 2^20763149 is an apocalyptic number.

It is an amenable number.

20763149 is a deficient number, since it is larger than the sum of its proper divisors (2618611).

20763149 is a wasteful number, since it uses less digits than its factorization.

20763149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60931.

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 20763149 is about 4556.6598512507. The cubic root of 20763149 is about 274.8512650251.

It can be divided in two parts, 2076 and 3149, that added together give a palindrome (5225).

The spelling of 20763149 in words is "twenty million, seven hundred sixty-three thousand, one hundred forty-nine".