8145020 has 24 divisors (see below), whose sum is σ = 18420864. Its totient is φ = 3007296.

The previous prime is 8145001. The next prime is 8145031. The reversal of 8145020 is 205418.

8145020 = T₅₄ + T₅₅ + ... + T₃₆₅.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 8144983 and 8145001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15404 + ... + 15923.

It is an arithmetic number, because the mean of its divisors is an integer number (767536).

Almost surely, 2^8145020 is an apocalyptic number.

It is an amenable number.

8145020 is an abundant number, since it is smaller than the sum of its proper divisors (10275844).

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

8145020 is a wasteful number, since it uses less digits than its factorization.

8145020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31349 (or 31347 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 8145020 is about 2853.9481424861. The cubic root of 8145020 is about 201.2012703025.

The spelling of 8145020 in words is "eight million, one hundred forty-five thousand, twenty".