78034215 has 64 divisors (see below), whose sum is σ = 150912000. Its totient is φ = 34376832.

The previous prime is 78034213. The next prime is 78034219. The reversal of 78034215 is 51243087.

It is not a de Polignac number, because 78034215 - 2¹ = 78034213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78034213) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 148944 + ... + 149466.

It is an arithmetic number, because the mean of its divisors is an integer number (2358000).

Almost surely, 2^78034215 is an apocalyptic number.

78034215 is a deficient number, since it is larger than the sum of its proper divisors (72877785).

78034215 is a wasteful number, since it uses less digits than its factorization.

78034215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 581 (or 567 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 78034215 is about 8833.6976968878. The cubic root of 78034215 is about 427.3283329760.

The spelling of 78034215 in words is "seventy-eight million, thirty-four thousand, two hundred fifteen".