78586742 has 32 divisors (see below), whose sum is σ = 131484864. Its totient is φ = 34992000.

The previous prime is 78586741. The next prime is 78586747. The reversal of 78586742 is 24768587.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78586741) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 144992 + ... + 145532.

It is an arithmetic number, because the mean of its divisors is an integer number (4108902).

Almost surely, 2^78586742 is an apocalyptic number.

78586742 is a deficient number, since it is larger than the sum of its proper divisors (52898122).

78586742 is a wasteful number, since it uses less digits than its factorization.

78586742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 744.

The product of its digits is 752640, while the sum is 47.

The square root of 78586742 is about 8864.9163560634. The cubic root of 78586742 is about 428.3345384285.

The spelling of 78586742 in words is "seventy-eight million, five hundred eighty-six thousand, seven hundred forty-two".