70472628 has 18 divisors (see below), whose sum is σ = 178139234. Its totient is φ = 23490864.

The previous prime is 70472627. The next prime is 70472671. The reversal of 70472628 is 82627407.

It can be written as a sum of positive squares in only one way, i.e., 57426084 + 13046544 = 7578^2 + 3612^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 1957573 = 70472628 / (7 + 0 + 4 + 7 + 2 + 6 + 2 + 8).

It is a junction number, because it is equal to n+sod(n) for n = 70472592 and 70472601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70472627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 978751 + ... + 978822.

Almost surely, 2^70472628 is an apocalyptic number.

It is an amenable number.

70472628 is an abundant number, since it is smaller than the sum of its proper divisors (107666606).

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

70472628 is a wasteful number, since it uses less digits than its factorization.

70472628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1957583 (or 1957578 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 36.

The square root of 70472628 is about 8394.7976747507. The cubic root of 70472628 is about 413.0539906395.

The spelling of 70472628 in words is "seventy million, four hundred seventy-two thousand, six hundred twenty-eight".