70732072 has 8 divisors (see below), whose sum is σ = 132622650. Its totient is φ = 35366032.

The previous prime is 70732069. The next prime is 70732099. The reversal of 70732072 is 27023707.

It can be written as a sum of positive squares in only one way, i.e., 50893956 + 19838116 = 7134^2 + 4454^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 70732072.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4420747 + ... + 4420762.

Almost surely, 2^70732072 is an apocalyptic number.

It is an amenable number.

70732072 is a deficient number, since it is larger than the sum of its proper divisors (61890578).

70732072 is a wasteful number, since it uses less digits than its factorization.

70732072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8841515 (or 8841511 counting only the distinct ones).

The product of its (nonzero) digits is 4116, while the sum is 28.

The square root of 70732072 is about 8410.2361441282. The cubic root of 70732072 is about 413.5602540538.

Adding to 70732072 its reverse (27023707), we get a palindrome (97755779).

The spelling of 70732072 in words is "seventy million, seven hundred thirty-two thousand, seventy-two".