70390120 has 32 divisors (see below), whose sum is σ = 165265920. Its totient is φ = 26931520.

The previous prime is 70390093. The next prime is 70390123. The reversal of 70390120 is 2109307.

It is a super-2 number, since 2×70390120² = 9909537987228800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 70390091 and 70390100.

It is not an unprimeable number, because it can be changed into a prime (70390123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37336 + ... + 39175.

It is an arithmetic number, because the mean of its divisors is an integer number (5164560).

Almost surely, 2^70390120 is an apocalyptic number.

It is an amenable number.

70390120 is an abundant number, since it is smaller than the sum of its proper divisors (94875800).

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

70390120 is a wasteful number, since it uses less digits than its factorization.

70390120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76545 (or 76541 counting only the distinct ones).

The product of its (nonzero) digits is 378, while the sum is 22.

The square root of 70390120 is about 8389.8820015540. The cubic root of 70390120 is about 412.8927291282.

Adding to 70390120 its reverse (2109307), we get a palindrome (72499427).

It can be divided in two parts, 703901 and 20, that added together give a square (703921 = 839²).

The spelling of 70390120 in words is "seventy million, three hundred ninety thousand, one hundred twenty".