70241220 has 144 divisors (see below), whose sum is σ = 246250368. Its totient is φ = 15874560.

The previous prime is 70241201. The next prime is 70241239. The reversal of 70241220 is 2214207.

It is an interprime number because it is at equal distance from previous prime (70241201) and next prime (70241239).

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

It is a junction number, because it is equal to n+sod(n) for n = 70241193 and 70241202.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 134560 + ... + 135080.

It is an arithmetic number, because the mean of its divisors is an integer number (1710072).

Almost surely, 2^70241220 is an apocalyptic number.

70241220 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 70241220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (123125184).

70241220 is an abundant number, since it is smaller than the sum of its proper divisors (176009148).

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

70241220 is a wasteful number, since it uses less digits than its factorization.

70241220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 650 (or 645 counting only the distinct ones).

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

The square root of 70241220 is about 8381.0035198656. The cubic root of 70241220 is about 412.6013855474.

Adding to 70241220 its reverse (2214207), we get a palindrome (72455427).

The spelling of 70241220 in words is "seventy million, two hundred forty-one thousand, two hundred twenty".