70389216 has 96 divisors (see below), whose sum is σ = 206750880. Its totient is φ = 23298048.

The previous prime is 70389199. The next prime is 70389227. The reversal of 70389216 is 61298307.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (36).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 221890 + ... + 222206.

It is an arithmetic number, because the mean of its divisors is an integer number (2153655).

Almost surely, 2^70389216 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70389216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103375440).

70389216 is an abundant number, since it is smaller than the sum of its proper divisors (136361664).

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

70389216 is a wasteful number, since it uses less digits than its factorization.

70389216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 593 (or 579 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 70389216 is about 8389.8281269642. The cubic root of 70389216 is about 412.8909615666.

Subtracting from 70389216 its reverse (61298307), we obtain a palindrome (9090909).

The spelling of 70389216 in words is "seventy million, three hundred eighty-nine thousand, two hundred sixteen".