20546424 has 48 divisors (see below), whose sum is σ = 56074200. Its totient is φ = 6796224.

The previous prime is 20546411. The next prime is 20546431. The reversal of 20546424 is 42464502.

20546424 = T₂₃₇ + T₂₃₈ + ... + T₅₁₄.

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, 8982 + ... + 11034.

Almost surely, 2^20546424 is an apocalyptic number.

20546424 is a gapful number since it is divisible by the number (24) 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 20546424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28037100).

20546424 is an abundant number, since it is smaller than the sum of its proper divisors (35527776).

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

20546424 is a wasteful number, since it uses less digits than its factorization.

20546424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2204 (or 2197 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

The square root of 20546424 is about 4532.8163430697. The cubic root of 20546424 is about 273.8916224729.

The spelling of 20546424 in words is "twenty million, five hundred forty-six thousand, four hundred twenty-four".