78090476 has 6 divisors (see below), whose sum is σ = 136658340. Its totient is φ = 39045236.

The previous prime is 78090449. The next prime is 78090479. The reversal of 78090476 is 67409087.

It is not an unprimeable number, because it can be changed into a prime (78090479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9761306 + ... + 9761313.

It is an arithmetic number, because the mean of its divisors is an integer number (22776390).

Almost surely, 2^78090476 is an apocalyptic number.

It is an amenable number.

78090476 is a deficient number, since it is larger than the sum of its proper divisors (58567864).

78090476 is a wasteful number, since it uses less digits than its factorization.

78090476 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19522623 (or 19522621 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 41.

The square root of 78090476 is about 8836.8815766649. The cubic root of 78090476 is about 427.4310065009.

The spelling of 78090476 in words is "seventy-eight million, ninety thousand, four hundred seventy-six".