20763320 has 16 divisors (see below), whose sum is σ = 46717560. Its totient is φ = 8305312.

The previous prime is 20763283. The next prime is 20763349. The reversal of 20763320 is 2336702.

It is a super-2 number, since 2×20763320² = 862230914844800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 259502 + ... + 259581.

Almost surely, 2^20763320 is an apocalyptic number.

20763320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20763320 is an abundant number, since it is smaller than the sum of its proper divisors (25954240).

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

20763320 is a wasteful number, since it uses less digits than its factorization.

20763320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 519094 (or 519090 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 23.

The square root of 20763320 is about 4556.6786149563. The cubic root of 20763320 is about 274.8520195580.

The spelling of 20763320 in words is "twenty million, seven hundred sixty-three thousand, three hundred twenty".