70212240 has 120 divisors (see below), whose sum is σ = 269500608. Its totient is φ = 16047360.

The previous prime is 70212187. The next prime is 70212257. The reversal of 70212240 is 4221207.

It is a tau number, because it is divible by the number of its divisors (120).

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1926 + ... + 12005.

Almost surely, 2^70212240 is an apocalyptic number.

70212240 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 70212240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (134750304).

70212240 is an abundant number, since it is smaller than the sum of its proper divisors (199288368).

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

70212240 is a wasteful number, since it uses less digits than its factorization.

70212240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13957 (or 13948 counting only the distinct ones).

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

The square root of 70212240 is about 8379.2744315961. The cubic root of 70212240 is about 412.5446342887.

Adding to 70212240 its reverse (4221207), we get a palindrome (74433447).

It can be divided in two parts, 7021 and 2240, that added together give a cube (9261 = 21³).

The spelling of 70212240 in words is "seventy million, two hundred twelve thousand, two hundred forty".