78469770 has 16 divisors (see below), whose sum is σ = 188327520. Its totient is φ = 20925264.

The previous prime is 78469763. The next prime is 78469771. The reversal of 78469770 is 7796487.

It is not an unprimeable number, because it can be changed into a prime (78469771) 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 in 7 ways as a sum of consecutive naturals, for example, 1307800 + ... + 1307859.

It is an arithmetic number, because the mean of its divisors is an integer number (11770470).

Almost surely, 2^78469770 is an apocalyptic number.

78469770 is an abundant number, since it is smaller than the sum of its proper divisors (109857750).

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

78469770 is a wasteful number, since it uses less digits than its factorization.

78469770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2615669.

The product of its (nonzero) digits is 592704, while the sum is 48.

The square root of 78469770 is about 8858.3164314671. The cubic root of 78469770 is about 428.1219155123.

The spelling of 78469770 in words is "seventy-eight million, four hundred sixty-nine thousand, seven hundred seventy".