20454358 has 16 divisors (see below), whose sum is σ = 31988736. Its totient is φ = 9798120.

The previous prime is 20454347. The next prime is 20454359. The reversal of 20454358 is 85345402.

It is a super-2 number, since 2×20454358² = 836761522384328, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20454359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4785 + ... + 7987.

It is an arithmetic number, because the mean of its divisors is an integer number (1999296).

Almost surely, 2^20454358 is an apocalyptic number.

20454358 is a deficient number, since it is larger than the sum of its proper divisors (11534378).

20454358 is a wasteful number, since it uses less digits than its factorization.

20454358 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3339.

The product of its (nonzero) digits is 19200, while the sum is 31.

The square root of 20454358 is about 4522.6494447392. The cubic root of 20454358 is about 273.4819183547.

The spelling of 20454358 in words is "twenty million, four hundred fifty-four thousand, three hundred fifty-eight".