1020564236 has 24 divisors (see below), whose sum is σ = 1852579344. Its totient is φ = 491581440.

The previous prime is 1020564199. The next prime is 1020564239. The reversal of 1020564236 is 6324650201.

It is a junction number, because it is equal to n+sod(n) for n = 1020564199 and 1020564208.

It is not an unprimeable number, because it can be changed into a prime (1020564239) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28085 + ... + 53196.

It is an arithmetic number, because the mean of its divisors is an integer number (77190806).

Almost surely, 2^1020564236 is an apocalyptic number.

It is an amenable number.

1020564236 is a deficient number, since it is larger than the sum of its proper divisors (832015108).

1020564236 is a wasteful number, since it uses less digits than its factorization.

1020564236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81401 (or 81399 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 1020564236 is about 31946.2710813015. The cubic root of 1020564236 is about 1006.8082873622.

The spelling of 1020564236 in words is "one billion, twenty million, five hundred sixty-four thousand, two hundred thirty-six".