20234477 has 4 divisors (see below), whose sum is σ = 20269536. Its totient is φ = 20199420.

The previous prime is 20234429. The next prime is 20234479. The reversal of 20234477 is 77443202.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20234477 - 2¹² = 20230381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20234479) 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, 16649 + ... + 17822.

It is an arithmetic number, because the mean of its divisors is an integer number (5067384).

Almost surely, 2^20234477 is an apocalyptic number.

It is an amenable number.

20234477 is a deficient number, since it is larger than the sum of its proper divisors (35059).

20234477 is an equidigital number, since it uses as much as digits as its factorization.

20234477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35058.

The product of its (nonzero) digits is 9408, while the sum is 29.

The square root of 20234477 is about 4498.2748915557. The cubic root of 20234477 is about 272.4984238048.

Adding to 20234477 its reverse (77443202), we get a palindrome (97677679).

The spelling of 20234477 in words is "twenty million, two hundred thirty-four thousand, four hundred seventy-seven".