70120578 has 32 divisors (see below), whose sum is σ = 156727872. Its totient is φ = 20729600.

The previous prime is 70120571. The next prime is 70120591. The reversal of 70120578 is 87502107.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (70120571) 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, 10251 + ... + 15662.

It is an arithmetic number, because the mean of its divisors is an integer number (4897746).

Almost surely, 2^70120578 is an apocalyptic number.

70120578 is an abundant number, since it is smaller than the sum of its proper divisors (86607294).

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

70120578 is a wasteful number, since it uses less digits than its factorization.

70120578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25970.

The product of its (nonzero) digits is 3920, while the sum is 30.

The square root of 70120578 is about 8373.8030786495. The cubic root of 70120578 is about 412.3650305905.

The spelling of 70120578 in words is "seventy million, one hundred twenty thousand, five hundred seventy-eight".