20763842 has 24 divisors (see below), whose sum is σ = 34473600. Its totient is φ = 9372440.

The previous prime is 20763839. The next prime is 20763881. The reversal of 20763842 is 24836702.

It is a super-2 number, since 2×20763842² = 862274269201928, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20763799 and 20763808.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 57659 + ... + 58017.

It is an arithmetic number, because the mean of its divisors is an integer number (1436400).

Almost surely, 2^20763842 is an apocalyptic number.

20763842 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20763842 is a deficient number, since it is larger than the sum of its proper divisors (13709758).

20763842 is a wasteful number, since it uses less digits than its factorization.

20763842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 622 (or 611 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 20763842 is about 4556.7358931586. The cubic root of 20763842 is about 274.8543228433.

The spelling of 20763842 in words is "twenty million, seven hundred sixty-three thousand, eight hundred forty-two".