20755467 has 16 divisors (see below), whose sum is σ = 32368000. Its totient is φ = 13108392.

The previous prime is 20755463. The next prime is 20755507. The reversal of 20755467 is 76455702.

It is not a de Polignac number, because 20755467 - 2² = 20755463 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20755463) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19717 + ... + 20742.

It is an arithmetic number, because the mean of its divisors is an integer number (2023000).

Almost surely, 2^20755467 is an apocalyptic number.

20755467 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

20755467 is a deficient number, since it is larger than the sum of its proper divisors (11612533).

20755467 is a wasteful number, since it uses less digits than its factorization.

20755467 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40487 (or 40481 counting only the distinct ones).

The product of its (nonzero) digits is 58800, while the sum is 36.

The square root of 20755467 is about 4555.8168312609. The cubic root of 20755467 is about 274.8173641323.

The spelling of 20755467 in words is "twenty million, seven hundred fifty-five thousand, four hundred sixty-seven".