70751220 has 96 divisors (see below), whose sum is σ = 208631808. Its totient is φ = 17880192.

The previous prime is 70751209. The next prime is 70751227. The reversal of 70751220 is 2215707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70751227) 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, 230307 + ... + 230613.

It is an arithmetic number, because the mean of its divisors is an integer number (2173248).

Almost surely, 2^70751220 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 70751220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104315904).

70751220 is an abundant number, since it is smaller than the sum of its proper divisors (137880588).

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

70751220 is a wasteful number, since it uses less digits than its factorization.

70751220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 509 (or 507 counting only the distinct ones).

The product of its (nonzero) digits is 980, while the sum is 24.

The square root of 70751220 is about 8411.3744417901. The cubic root of 70751220 is about 413.5975692210.

Adding to 70751220 its reverse (2215707), we get a palindrome (72966927).

The spelling of 70751220 in words is "seventy million, seven hundred fifty-one thousand, two hundred twenty".