78120435 has 16 divisors (see below), whose sum is σ = 125625600. Its totient is φ = 41453280.

The previous prime is 78120359. The next prime is 78120437. The reversal of 78120435 is 53402187.

It is not a de Polignac number, because 78120435 - 2⁸ = 78120179 is a prime.

It is a super-2 number, since 2×78120435² = 12205604729178450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78120437) 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, 10101 + ... + 16070.

It is an arithmetic number, because the mean of its divisors is an integer number (7851600).

Almost surely, 2^78120435 is an apocalyptic number.

78120435 is a deficient number, since it is larger than the sum of its proper divisors (47505165).

78120435 is a wasteful number, since it uses less digits than its factorization.

78120435 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26378.

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

The square root of 78120435 is about 8838.5765256629. The cubic root of 78120435 is about 427.4856600641.

The spelling of 78120435 in words is "seventy-eight million, one hundred twenty thousand, four hundred thirty-five".