820020148 has 24 divisors (see below), whose sum is σ = 1470978432. Its totient is φ = 399774144.

The previous prime is 820020119. The next prime is 820020161. The reversal of 820020148 is 841020028.

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, 102261 + ... + 109987.

It is an arithmetic number, because the mean of its divisors is an integer number (61290768).

Almost surely, 2^820020148 is an apocalyptic number.

It is an amenable number.

820020148 is a deficient number, since it is larger than the sum of its proper divisors (650958284).

820020148 is a wasteful number, since it uses less digits than its factorization.

820020148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8391 (or 8389 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 25.

The square root of 820020148 is about 28635.9939237317. The cubic root of 820020148 is about 935.9978282390.

The spelling of 820020148 in words is "eight hundred twenty million, twenty thousand, one hundred forty-eight".