20616454 has 8 divisors (see below), whose sum is σ = 30997728. Its totient is φ = 10283880.

The previous prime is 20616451. The next prime is 20616473. The reversal of 20616454 is 45461602.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20616451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11097 + ... + 12820.

It is an arithmetic number, because the mean of its divisors is an integer number (3874716).

Almost surely, 2^20616454 is an apocalyptic number.

20616454 is a deficient number, since it is larger than the sum of its proper divisors (10381274).

20616454 is a wasteful number, since it uses less digits than its factorization.

20616454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24350.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 20616454 is about 4540.5345500282. The cubic root of 20616454 is about 274.2024450905.

It can be divided in two parts, 2061 and 6454, that added together give a triangular number (8515 = T₁₃₀).

The spelling of 20616454 in words is "twenty million, six hundred sixteen thousand, four hundred fifty-four".