70237440 has 432 divisors, whose sum is σ = 303558528. Its totient is φ = 14598144.

The previous prime is 70237403. The next prime is 70237441. The reversal of 70237440 is 4473207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70237441) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1048287 + ... + 1048353.

Almost surely, 2^70237440 is an apocalyptic number.

70237440 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 70237440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (151779264).

70237440 is an abundant number, since it is smaller than the sum of its proper divisors (233321088).

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

70237440 is a wasteful number, since it uses less digits than its factorization.

70237440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114 (or 97 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 27.

The square root of 70237440 is about 8380.7780068440. The cubic root of 70237440 is about 412.5939840947.

The spelling of 70237440 in words is "seventy million, two hundred thirty-seven thousand, four hundred forty".