76821048 has 96 divisors (see below), whose sum is σ = 221020800. Its totient is φ = 24984288.

The previous prime is 76821023. The next prime is 76821071. The reversal of 76821048 is 84012867.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 83133 + ... + 84051.

It is an arithmetic number, because the mean of its divisors is an integer number (2302300).

Almost surely, 2^76821048 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 76821048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110510400).

76821048 is an abundant number, since it is smaller than the sum of its proper divisors (144199752).

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

76821048 is a wasteful number, since it uses less digits than its factorization.

76821048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 983 (or 967 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The square root of 76821048 is about 8764.7617195221. The cubic root of 76821048 is about 425.1022554414.

The spelling of 76821048 in words is "seventy-six million, eight hundred twenty-one thousand, forty-eight".