20346480 has 240 divisors, whose sum is σ = 85423104. Its totient is φ = 4216320.

The previous prime is 20346463. The next prime is 20346497. The reversal of 20346480 is 8464302.

It is an interprime number because it is at equal distance from previous prime (20346463) and next prime (20346497).

It is a tau number, because it is divible by the number of its divisors (240).

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 47 ways as a sum of consecutive naturals, for example, 55257 + ... + 55623.

Almost surely, 2^20346480 is an apocalyptic number.

20346480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20346480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42711552).

20346480 is an abundant number, since it is smaller than the sum of its proper divisors (65076624).

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

20346480 is a wasteful number, since it uses less digits than its factorization.

20346480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404 (or 395 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 20346480 is about 4510.7072616165. The cubic root of 20346480 is about 273.0002817692. Note that the first 3 decimals are identical.

The spelling of 20346480 in words is "twenty million, three hundred forty-six thousand, four hundred eighty".