70320146 has 16 divisors (see below), whose sum is σ = 114874200. Its totient is φ = 32089728.

The previous prime is 70320137. The next prime is 70320149. The reversal of 70320146 is 64102307.

It can be written as a sum of positive squares in 4 ways, for example, as 44422225 + 25897921 = 6665^2 + 5089^2 .

It is a super-2 number, since 2×70320146² = 9889845866922632, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (70320149) 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, 12881 + ... + 17508.

Almost surely, 2^70320146 is an apocalyptic number.

70320146 is a deficient number, since it is larger than the sum of its proper divisors (44554054).

70320146 is a wasteful number, since it uses less digits than its factorization.

70320146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30493.

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 70320146 is about 8385.7108225839. The cubic root of 70320146 is about 412.7558664796.

The spelling of 70320146 in words is "seventy million, three hundred twenty thousand, one hundred forty-six".