20468784 has 40 divisors (see below), whose sum is σ = 60432640. Its totient is φ = 5848128.

The previous prime is 20468771. The next prime is 20468801. The reversal of 20468784 is 48786402.

It is a super-2 number, since 2×20468784² = 837942236877312, which contains 22 as substring.

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, 30124 + ... + 30795.

It is an arithmetic number, because the mean of its divisors is an integer number (1510816).

Almost surely, 2^20468784 is an apocalyptic number.

20468784 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20468784 is an abundant number, since it is smaller than the sum of its proper divisors (39963856).

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

20468784 is a wasteful number, since it uses less digits than its factorization.

20468784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60937 (or 60931 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 39.

The square root of 20468784 is about 4524.2440252489. The cubic root of 20468784 is about 273.5461968004.

The spelling of 20468784 in words is "twenty million, four hundred sixty-eight thousand, seven hundred eighty-four".