20454077 has 16 divisors (see below), whose sum is σ = 25608960. Its totient is φ = 15929088.

The previous prime is 20454067. The next prime is 20454097. The reversal of 20454077 is 77045402.

It is not a de Polignac number, because 20454077 - 2⁸ = 20453821 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20454067) 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 15 ways as a sum of consecutive naturals, for example, 488 + ... + 6414.

It is an arithmetic number, because the mean of its divisors is an integer number (1600560).

Almost surely, 2^20454077 is an apocalyptic number.

It is an amenable number.

20454077 is a deficient number, since it is larger than the sum of its proper divisors (5154883).

20454077 is a wasteful number, since it uses less digits than its factorization.

20454077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5980.

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

The square root of 20454077 is about 4522.6183787713. The cubic root of 20454077 is about 273.4806659929.

Adding to 20454077 its reverse (77045402), we get a palindrome (97499479).

The spelling of 20454077 in words is "twenty million, four hundred fifty-four thousand, seventy-seven".