70145434 has 16 divisors (see below), whose sum is σ = 111585600. Its totient is φ = 32956864.

The previous prime is 70145429. The next prime is 70145437. The reversal of 70145434 is 43454107.

It is a super-2 number, since 2×70145434² = 9840763822096712, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (70145437) 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 7 ways as a sum of consecutive naturals, for example, 27297 + ... + 29755.

It is an arithmetic number, because the mean of its divisors is an integer number (6974100).

Almost surely, 2^70145434 is an apocalyptic number.

70145434 is a deficient number, since it is larger than the sum of its proper divisors (41440166).

70145434 is a wasteful number, since it uses less digits than its factorization.

70145434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3317.

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 70145434 is about 8375.2870995566. The cubic root of 70145434 is about 412.4137492151.

The spelling of 70145434 in words is "seventy million, one hundred forty-five thousand, four hundred thirty-four".