20954460 has 24 divisors (see below), whose sum is σ = 58672656. Its totient is φ = 5587840.

The previous prime is 20954447. The next prime is 20954467. The reversal of 20954460 is 6445902.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20954467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 174561 + ... + 174680.

It is an arithmetic number, because the mean of its divisors is an integer number (2444694).

Almost surely, 2^20954460 is an apocalyptic number.

20954460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20954460 is an abundant number, since it is smaller than the sum of its proper divisors (37718196).

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

20954460 is a wasteful number, since it uses less digits than its factorization.

20954460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349253 (or 349251 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 20954460 is about 4577.6041768593. The cubic root of 20954460 is about 275.6928424995.

It can be divided in two parts, 2095 and 4460, that added together give a triangular number (6555 = T₁₁₄).

The spelling of 20954460 in words is "twenty million, nine hundred fifty-four thousand, four hundred sixty".