70389340 has 24 divisors (see below), whose sum is σ = 168934752. Its totient is φ = 24133440.

The previous prime is 70389337. The next prime is 70389343. The reversal of 70389340 is 4398307.

It is an interprime number because it is at equal distance from previous prime (70389337) and next prime (70389343).

It is a junction number, because it is equal to n+sod(n) for n = 70389296 and 70389305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70389343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 251251 + ... + 251530.

It is an arithmetic number, because the mean of its divisors is an integer number (7038948).

Almost surely, 2^70389340 is an apocalyptic number.

70389340 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

70389340 is an abundant number, since it is smaller than the sum of its proper divisors (98545412).

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

70389340 is a wasteful number, since it uses less digits than its factorization.

70389340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502797 (or 502795 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 70389340 is about 8389.8355168621. The cubic root of 70389340 is about 412.8912040206.

The spelling of 70389340 in words is "seventy million, three hundred eighty-nine thousand, three hundred forty".