533946978 has 80 divisors (see below), whose sum is σ = 1275436800. Its totient is φ = 166567104.

The previous prime is 533946901. The next prime is 533946979. The reversal of 533946978 is 879649335.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (533946979) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 173598 + ... + 176646.

It is an arithmetic number, because the mean of its divisors is an integer number (15942960).

Almost surely, 2^533946978 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 533946978, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (637718400).

533946978 is an abundant number, since it is smaller than the sum of its proper divisors (741489822).

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

533946978 is a wasteful number, since it uses less digits than its factorization.

533946978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3133 (or 3124 counting only the distinct ones).

The product of its digits is 4898880, while the sum is 54.

The square root of 533946978 is about 23107.2927449323. The cubic root of 533946978 is about 811.2711727669.

The spelling of 533946978 in words is "five hundred thirty-three million, nine hundred forty-six thousand, nine hundred seventy-eight".