70238745 has 20 divisors (see below), whose sum is σ = 125910180. Its totient is φ = 37460448.

The previous prime is 70238743. The next prime is 70238761. The reversal of 70238745 is 54783207.

It can be written as a sum of positive squares in 2 ways, for example, as 45198729 + 25040016 = 6723^2 + 5004^2 .

It is not a de Polignac number, because 70238745 - 2¹ = 70238743 is a prime.

It is a zygodrome in base 3.

It is not an unprimeable number, because it can be changed into a prime (70238743) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 86310 + ... + 87119.

It is an arithmetic number, because the mean of its divisors is an integer number (6295509).

Almost surely, 2^70238745 is an apocalyptic number.

It is an amenable number.

70238745 is a deficient number, since it is larger than the sum of its proper divisors (55671435).

70238745 is a wasteful number, since it uses less digits than its factorization.

70238745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173446 (or 173437 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 36.

The square root of 70238745 is about 8380.8558632159. The cubic root of 70238745 is about 412.5965393881.

The spelling of 70238745 in words is "seventy million, two hundred thirty-eight thousand, seven hundred forty-five".