70226730 has 128 divisors (see below), whose sum is σ = 217382400. Its totient is φ = 15800832.

The previous prime is 70226713. The next prime is 70226731. The reversal of 70226730 is 3762207.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 70226694 and 70226703.

It is not an unprimeable number, because it can be changed into a prime (70226731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 137716 + ... + 138224.

It is an arithmetic number, because the mean of its divisors is an integer number (1698300).

Almost surely, 2^70226730 is an apocalyptic number.

70226730 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 70226730, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108691200).

70226730 is an abundant number, since it is smaller than the sum of its proper divisors (147155670).

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

70226730 is a wasteful number, since it uses less digits than its factorization.

70226730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 605 (or 599 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 27.

The square root of 70226730 is about 8380.1390203266. The cubic root of 70226730 is about 412.5730118696.

Adding to 70226730 its reverse (3762207), we get a palindrome (73988937).

The spelling of 70226730 in words is "seventy million, two hundred twenty-six thousand, seven hundred thirty".