70221352 has 8 divisors (see below), whose sum is σ = 131665050. Its totient is φ = 35110672.

The previous prime is 70221331. The next prime is 70221367. The reversal of 70221352 is 25312207.

It can be written as a sum of positive squares in only one way, i.e., 36650916 + 33570436 = 6054^2 + 5794^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4388827 + ... + 4388842.

Almost surely, 2^70221352 is an apocalyptic number.

It is an amenable number.

70221352 is a deficient number, since it is larger than the sum of its proper divisors (61443698).

70221352 is a wasteful number, since it uses less digits than its factorization.

70221352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8777675 (or 8777671 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 70221352 is about 8379.8181364514. The cubic root of 70221352 is about 412.5624799145.

Adding to 70221352 its reverse (25312207), we get a palindrome (95533559).

The spelling of 70221352 in words is "seventy million, two hundred twenty-one thousand, three hundred fifty-two".