70720338 has 32 divisors (see below), whose sum is σ = 155203776. Its totient is φ = 21348288.

The previous prime is 70720333. The next prime is 70720343. The reversal of 70720338 is 83302707.

It is an interprime number because it is at equal distance from previous prime (70720333) and next prime (70720343).

It is not an unprimeable number, because it can be changed into a prime (70720333) 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 15 ways as a sum of consecutive naturals, for example, 4420 + ... + 12687.

It is an arithmetic number, because the mean of its divisors is an integer number (4850118).

Almost surely, 2^70720338 is an apocalyptic number.

70720338 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

70720338 is an abundant number, since it is smaller than the sum of its proper divisors (84483438).

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

70720338 is a wasteful number, since it uses less digits than its factorization.

70720338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17178.

The product of its (nonzero) digits is 7056, while the sum is 30.

The square root of 70720338 is about 8409.5385129031. The cubic root of 70720338 is about 413.5373837855.

The spelling of 70720338 in words is "seventy million, seven hundred twenty thousand, three hundred thirty-eight".