820254450 has 24 divisors (see below), whose sum is σ = 2034231408. Its totient is φ = 218734480.

The previous prime is 820254371. The next prime is 820254469. The reversal of 820254450 is 54452028.

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

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2734032 + ... + 2734331.

It is an arithmetic number, because the mean of its divisors is an integer number (84759642).

Almost surely, 2^820254450 is an apocalyptic number.

820254450 is an abundant number, since it is smaller than the sum of its proper divisors (1213976958).

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

820254450 is a wasteful number, since it uses less digits than its factorization.

820254450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5468378 (or 5468373 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 30.

The square root of 820254450 is about 28640.0846716625. The cubic root of 820254450 is about 936.0869664063.

The spelling of 820254450 in words is "eight hundred twenty million, two hundred fifty-four thousand, four hundred fifty".