70267440 has 160 divisors (see below), whose sum is σ = 230360256. Its totient is φ = 17694720.

The previous prime is 70267433. The next prime is 70267447. The reversal of 70267440 is 4476207.

It is an interprime number because it is at equal distance from previous prime (70267433) and next prime (70267447).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 70267398 and 70267407.

It is not an unprimeable number, because it can be changed into a prime (70267447) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 363984 + ... + 364176.

Almost surely, 2^70267440 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 70267440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (115180128).

70267440 is an abundant number, since it is smaller than the sum of its proper divisors (160092816).

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

70267440 is a wasteful number, since it uses less digits than its factorization.

70267440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287 (or 281 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 30.

The square root of 70267440 is about 8382.5676257338. The cubic root of 70267440 is about 412.6527184755.

It can be divided in two parts, 70267 and 440, that added together give a palindrome (70707).

The spelling of 70267440 in words is "seventy million, two hundred sixty-seven thousand, four hundred forty".