70293440 has 84 divisors (see below), whose sum is σ = 194758056. Its totient is φ = 24095232.

The previous prime is 70293437. The next prime is 70293449. The reversal of 70293440 is 4439207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70293449) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13439 + ... + 17921.

Almost surely, 2^70293440 is an apocalyptic number.

70293440 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70293440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97379028).

70293440 is an abundant number, since it is smaller than the sum of its proper divisors (124464616).

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

70293440 is a wasteful number, since it uses less digits than its factorization.

70293440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4514 (or 4497 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 70293440 is about 8384.1183197758. The cubic root of 70293440 is about 412.7036080846.

The spelling of 70293440 in words is "seventy million, two hundred ninety-three thousand, four hundred forty".