70890230 has 32 divisors (see below), whose sum is σ = 133787808. Its totient is φ = 27014400.

The previous prime is 70890179. The next prime is 70890233. The reversal of 70890230 is 3209807.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 70890193 and 70890202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70890233) 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, 15620 + ... + 19640.

It is an arithmetic number, because the mean of its divisors is an integer number (4180869).

Almost surely, 2^70890230 is an apocalyptic number.

70890230 is a deficient number, since it is larger than the sum of its proper divisors (62897578).

70890230 is a wasteful number, since it uses less digits than its factorization.

70890230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4112.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 70890230 is about 8419.6336024794. The cubic root of 70890230 is about 413.8682669551.

The spelling of 70890230 in words is "seventy million, eight hundred ninety thousand, two hundred thirty".