70389236 has 6 divisors (see below), whose sum is σ = 123181170. Its totient is φ = 35194616.

The previous prime is 70389233. The next prime is 70389287. The reversal of 70389236 is 63298307.

70389236 is digitally balanced in base 9, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 70224400 + 164836 = 8380^2 + 406^2 .

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

70389236 is strictly pandigital in base 9.

It is a self number, because there is not a number n which added to its sum of digits gives 70389236.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70389233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8798651 + ... + 8798658.

It is an arithmetic number, because the mean of its divisors is an integer number (20530195).

Almost surely, 2^70389236 is an apocalyptic number.

It is an amenable number.

70389236 is a deficient number, since it is larger than the sum of its proper divisors (52791934).

70389236 is a wasteful number, since it uses less digits than its factorization.

70389236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17597313 (or 17597311 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 38.

The square root of 70389236 is about 8389.8293188837. The cubic root of 70389236 is about 412.8910006721.

The spelling of 70389236 in words is "seventy million, three hundred eighty-nine thousand, two hundred thirty-six".