52423420 has 48 divisors (see below), whose sum is σ = 128899008. Its totient is φ = 17533440.

The previous prime is 52423391. The next prime is 52423429. The reversal of 52423420 is 2432425.

52423420 = 473² + 474² + ... + 640².

It is a junction number, because it is equal to n+sod(n) for n = 52423391 and 52423400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52423429) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1174 + ... + 10306.

It is an arithmetic number, because the mean of its divisors is an integer number (2685396).

Almost surely, 2^52423420 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 52423420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64449504).

52423420 is an abundant number, since it is smaller than the sum of its proper divisors (76475588).

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

52423420 is a wasteful number, since it uses less digits than its factorization.

52423420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9190 (or 9188 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 52423420 is about 7240.4019225455. The cubic root of 52423420 is about 374.2614679574.

Adding to 52423420 its reverse (2432425), we get a palindrome (54855845).

The spelling of 52423420 in words is "fifty-two million, four hundred twenty-three thousand, four hundred twenty".