23162420 has 12 divisors (see below), whose sum is σ = 48641124. Its totient is φ = 9264960.

The previous prime is 23162411. The next prime is 23162437. The reversal of 23162420 is 2426132.

It can be written as a sum of positive squares in 2 ways, for example, as 15085456 + 8076964 = 3884^2 + 2842^2 .

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 1158121 = 23162420 / (2 + 3 + 1 + 6 + 2 + 4 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 23162392 and 23162401.

It is a congruent number.

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, 579041 + ... + 579080.

It is an arithmetic number, because the mean of its divisors is an integer number (4053427).

Almost surely, 2^23162420 is an apocalyptic number.

23162420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23162420 is an abundant number, since it is smaller than the sum of its proper divisors (25478704).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23162420 is a wasteful number, since it uses less digits than its factorization.

23162420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1158130 (or 1158128 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 23162420 is about 4812.7351890583. The cubic root of 23162420 is about 285.0545499358.

Adding to 23162420 its reverse (2426132), we get a palindrome (25588552).

The spelling of 23162420 in words is "twenty-three million, one hundred sixty-two thousand, four hundred twenty".