821048070 has 32 divisors (see below), whose sum is σ = 1973753568. Its totient is φ = 218586368.

The previous prime is 821048057. The next prime is 821048117. The reversal of 821048070 is 70840128.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3669 + ... + 40688.

It is an arithmetic number, because the mean of its divisors is an integer number (61679799).

Almost surely, 2^821048070 is an apocalyptic number.

821048070 is an abundant number, since it is smaller than the sum of its proper divisors (1152705498).

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

821048070 is a wasteful number, since it uses less digits than its factorization.

821048070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44984.

The product of its (nonzero) digits is 3584, while the sum is 30.

The square root of 821048070 is about 28653.9363787945. The cubic root of 821048070 is about 936.3887662016.

Adding to 821048070 its reverse (70840128), we get a palindrome (891888198).

It can be divided in two parts, 8210 and 48070, that added together give a triangular number (56280 = T₃₃₅).

The spelling of 821048070 in words is "eight hundred twenty-one million, forty-eight thousand, seventy".