70133780 has 72 divisors (see below), whose sum is σ = 157648680. Its totient is φ = 26188800.

The previous prime is 70133747. The next prime is 70133783. The reversal of 70133780 is 8733107.

It can be written as a sum of positive squares in 4 ways, for example, as 1110916 + 69022864 = 1054^2 + 8308^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70133783) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 787976 + ... + 788064.

It is an arithmetic number, because the mean of its divisors is an integer number (2189565).

Almost surely, 2^70133780 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 70133780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78824340).

70133780 is an abundant number, since it is smaller than the sum of its proper divisors (87514900).

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

70133780 is a wasteful number, since it uses less digits than its factorization.

70133780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201 (or 168 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 29.

The square root of 70133780 is about 8374.5913333129. The cubic root of 70133780 is about 412.3909084030.

Adding to 70133780 its reverse (8733107), we get a palindrome (78866887).

The spelling of 70133780 in words is "seventy million, one hundred thirty-three thousand, seven hundred eighty".