70401240 has 288 divisors, whose sum is σ = 287567280. Its totient is φ = 14805504.

The previous prime is 70401239. The next prime is 70401283. The reversal of 70401240 is 4210407.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 229167 + ... + 229473.

Almost surely, 2^70401240 is an apocalyptic number.

70401240 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 70401240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (143783640).

70401240 is an abundant number, since it is smaller than the sum of its proper divisors (217166040).

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

70401240 is a wasteful number, since it uses less digits than its factorization.

70401240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351 (or 337 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 18.

The square root of 70401240 is about 8390.5446783865. The cubic root of 70401240 is about 412.9144704625.

Adding to 70401240 its reverse (4210407), we get a palindrome (74611647).

The spelling of 70401240 in words is "seventy million, four hundred one thousand, two hundred forty".