8215772 has 6 divisors (see below), whose sum is σ = 14377608. Its totient is φ = 4107884.

The previous prime is 8215717. The next prime is 8215783. The reversal of 8215772 is 2775128.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1026968 + ... + 1026975.

It is an arithmetic number, because the mean of its divisors is an integer number (2396268).

Almost surely, 2^8215772 is an apocalyptic number.

It is an amenable number.

8215772 is a deficient number, since it is larger than the sum of its proper divisors (6161836).

8215772 is a wasteful number, since it uses less digits than its factorization.

8215772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2053947 (or 2053945 counting only the distinct ones).

The product of its digits is 7840, while the sum is 32.

The square root of 8215772 is about 2866.3168003555. The cubic root of 8215772 is about 201.7821721421.

The spelling of 8215772 in words is "eight million, two hundred fifteen thousand, seven hundred seventy-two".