20724954 has 8 divisors (see below), whose sum is σ = 41449920. Its totient is φ = 6908316.

The previous prime is 20724943. The next prime is 20724959. The reversal of 20724954 is 45942702.

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

20724954 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (20724959) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1727074 + ... + 1727085.

It is an arithmetic number, because the mean of its divisors is an integer number (5181240).

Almost surely, 2^20724954 is an apocalyptic number.

20724954 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20724954 is a wasteful number, since it uses less digits than its factorization.

20724954 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3454164.

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 20724954 is about 4552.4668038328. The cubic root of 20724954 is about 274.6826267027.

The spelling of 20724954 in words is "twenty million, seven hundred twenty-four thousand, nine hundred fifty-four".