20722754 has 8 divisors (see below), whose sum is σ = 33475260. Its totient is φ = 9564336.

The previous prime is 20722687. The next prime is 20722769. The reversal of 20722754 is 45722702.

It can be written as a sum of positive squares in 2 ways, for example, as 20457529 + 265225 = 4523^2 + 515^2 .

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

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, 398489 + ... + 398540.

Almost surely, 2^20722754 is an apocalyptic number.

20722754 is a deficient number, since it is larger than the sum of its proper divisors (12752506).

20722754 is a wasteful number, since it uses less digits than its factorization.

20722754 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 797044.

The product of its (nonzero) digits is 7840, while the sum is 29.

The square root of 20722754 is about 4552.2251701778. The cubic root of 20722754 is about 274.6729069680.

The spelling of 20722754 in words is "twenty million, seven hundred twenty-two thousand, seven hundred fifty-four".