20798424 has 32 divisors (see below), whose sum is σ = 57774000. Its totient is φ = 6932736.

The previous prime is 20798413. The next prime is 20798443. The reversal of 20798424 is 42489702.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47929 + ... + 48360.

Almost surely, 2^20798424 is an apocalyptic number.

20798424 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20798424 is an abundant number, since it is smaller than the sum of its proper divisors (36975576).

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

20798424 is a wasteful number, since it uses less digits than its factorization.

20798424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96304 (or 96294 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 20798424 is about 4560.5289166938. The cubic root of 20798424 is about 275.0068273787.

The spelling of 20798424 in words is "twenty million, seven hundred ninety-eight thousand, four hundred twenty-four".