70720022 has 8 divisors (see below), whose sum is σ = 106756176. Its totient is φ = 35134632.

The previous prime is 70719977. The next prime is 70720031. The reversal of 70720022 is 22002707.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 70719976 and 70720003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112298 + ... + 112925.

It is an arithmetic number, because the mean of its divisors is an integer number (13344522).

Almost surely, 2^70720022 is an apocalyptic number.

70720022 is a deficient number, since it is larger than the sum of its proper divisors (36036154).

70720022 is a wasteful number, since it uses less digits than its factorization.

70720022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225382.

The product of its (nonzero) digits is 392, while the sum is 20.

The square root of 70720022 is about 8409.5197246930. The cubic root of 70720022 is about 413.5367678476.

Adding to 70720022 its reverse (22002707), we get a palindrome (92722729).

The spelling of 70720022 in words is "seventy million, seven hundred twenty thousand, twenty-two".