70304440 has 64 divisors (see below), whose sum is σ = 165117600. Its totient is φ = 26915328.

The previous prime is 70304431. The next prime is 70304449. The reversal of 70304440 is 4440307.

It is an interprime number because it is at equal distance from previous prime (70304431) and next prime (70304449).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70304449) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 98806 + ... + 99514.

Almost surely, 2^70304440 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 70304440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82558800).

70304440 is an abundant number, since it is smaller than the sum of its proper divisors (94813160).

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

70304440 is a wasteful number, since it uses less digits than its factorization.

70304440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 824 (or 820 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 22.

The square root of 70304440 is about 8384.7742963064. The cubic root of 70304440 is about 412.7251345263.

Adding to 70304440 its reverse (4440307), we get a palindrome (74744747).

The spelling of 70304440 in words is "seventy million, three hundred four thousand, four hundred forty".