1020872 has 8 divisors (see below), whose sum is σ = 1914150. Its totient is φ = 510432.

The previous prime is 1020853. The next prime is 1020881. The reversal of 1020872 is 2780201.

It can be written as a sum of positive squares in only one way, i.e., 1012036 + 8836 = 1006^2 + 94^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63797 + ... + 63812.

2^1020872 is an apocalyptic number.

It is an amenable number.

1020872 is a deficient number, since it is larger than the sum of its proper divisors (893278).

1020872 is a wasteful number, since it uses less digits than its factorization.

1020872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127615 (or 127611 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 20.

The square root of 1020872 is about 1010.3821059381. The cubic root of 1020872 is about 100.6909482431.

The spelling of 1020872 in words is "one million, twenty thousand, eight hundred seventy-two".