78134912 has 16 divisors (see below), whose sum is σ = 155659650. Its totient is φ = 39067392.

The previous prime is 78134909. The next prime is 78134923. The reversal of 78134912 is 21943187.

It can be written as a sum of positive squares in only one way, i.e., 72863296 + 5271616 = 8536^2 + 2296^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a super-2 number, since 2×78134912² = 12210128946495488, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305087 + ... + 305342.

Almost surely, 2^78134912 is an apocalyptic number.

It is an amenable number.

78134912 is a deficient number, since it is larger than the sum of its proper divisors (77524738).

78134912 is an equidigital number, since it uses as much as digits as its factorization.

78134912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 610443 (or 610431 counting only the distinct ones).

The product of its digits is 12096, while the sum is 35.

The square root of 78134912 is about 8839.3954544414. The cubic root of 78134912 is about 427.5120651383.

It can be divided in two parts, 781 and 34912, that multiplied together give a palindrome (27266272).

The spelling of 78134912 in words is "seventy-eight million, one hundred thirty-four thousand, nine hundred twelve".