820053470 has 16 divisors (see below), whose sum is σ = 1479111408. Its totient is φ = 327351360.

The previous prime is 820053469. The next prime is 820053511. The reversal of 820053470 is 74350028.

It is a happy number.

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, 78599 + ... + 88418.

It is an arithmetic number, because the mean of its divisors is an integer number (92444463).

Almost surely, 2^820053470 is an apocalyptic number.

820053470 is a deficient number, since it is larger than the sum of its proper divisors (659057938).

820053470 is a wasteful number, since it uses less digits than its factorization.

820053470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167515.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 820053470 is about 28636.5757380312. The cubic root of 820053470 is about 936.0105063410.

The spelling of 820053470 in words is "eight hundred twenty million, fifty-three thousand, four hundred seventy".