8152420 has 12 divisors (see below), whose sum is σ = 17120124. Its totient is φ = 3260960.

The previous prime is 8152409. The next prime is 8152427. The reversal of 8152420 is 242518.

It can be written as a sum of positive squares in 2 ways, for example, as 4435236 + 3717184 = 2106^2 + 1928^2 .

It is a junction number, because it is equal to n+sod(n) for n = 8152391 and 8152400.

It is not an unprimeable number, because it can be changed into a prime (8152427) 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, 203791 + ... + 203830.

It is an arithmetic number, because the mean of its divisors is an integer number (1426677).

Almost surely, 2^8152420 is an apocalyptic number.

It is an amenable number.

8152420 is an abundant number, since it is smaller than the sum of its proper divisors (8967704).

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

8152420 is a wasteful number, since it uses less digits than its factorization.

8152420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407630 (or 407628 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 8152420 is about 2855.2442977791. The cubic root of 8152420 is about 201.2621843632.

Adding to 8152420 its reverse (242518), we get a palindrome (8394938).

The spelling of 8152420 in words is "eight million, one hundred fifty-two thousand, four hundred twenty".