76843890 has 112 divisors (see below), whose sum is σ = 211534848. Its totient is φ = 20085408.

The previous prime is 76843889. The next prime is 76843903. The reversal of 76843890 is 9834867.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 605007 + ... + 605133.

It is an arithmetic number, because the mean of its divisors is an integer number (1888704).

Almost surely, 2^76843890 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 76843890, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105767424).

76843890 is an abundant number, since it is smaller than the sum of its proper divisors (134690958).

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

76843890 is a wasteful number, since it uses less digits than its factorization.

76843890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235 (or 220 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 76843890 is about 8766.0646814862. The cubic root of 76843890 is about 425.1443846222.

The spelling of 76843890 in words is "seventy-six million, eight hundred forty-three thousand, eight hundred ninety".