20724682 has 8 divisors (see below), whose sum is σ = 33913152. Its totient is φ = 9420300.

The previous prime is 20724677. The next prime is 20724707. The reversal of 20724682 is 28642702.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×20724682² = 859024888002248, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 470994 + ... + 471037.

It is an arithmetic number, because the mean of its divisors is an integer number (4239144).

Almost surely, 2^20724682 is an apocalyptic number.

20724682 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20724682 is a deficient number, since it is larger than the sum of its proper divisors (13188470).

20724682 is a wasteful number, since it uses less digits than its factorization.

20724682 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 942044.

The product of its (nonzero) digits is 10752, while the sum is 31.

The square root of 20724682 is about 4552.4369298212. The cubic root of 20724682 is about 274.6814250273.

The spelling of 20724682 in words is "twenty million, seven hundred twenty-four thousand, six hundred eighty-two".