70212450 has 96 divisors (see below), whose sum is σ = 217128960. Its totient is φ = 14587200.

The previous prime is 70212379. The next prime is 70212487. The reversal of 70212450 is 5421207.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

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, 8511 + ... + 14589.

It is an arithmetic number, because the mean of its divisors is an integer number (2261760).

Almost surely, 2^70212450 is an apocalyptic number.

70212450 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 70212450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108564480).

70212450 is an abundant number, since it is smaller than the sum of its proper divisors (146916510).

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

70212450 is a wasteful number, since it uses less digits than its factorization.

70212450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6112 (or 6107 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 21.

The square root of 70212450 is about 8379.2869625046. The cubic root of 70212450 is about 412.5450455858.

Adding to 70212450 its reverse (5421207), we get a palindrome (75633657).

The spelling of 70212450 in words is "seventy million, two hundred twelve thousand, four hundred fifty".