70228520 has 16 divisors (see below), whose sum is σ = 158014260. Its totient is φ = 28091392.

The previous prime is 70228519. The next prime is 70228537. The reversal of 70228520 is 2582207.

It can be written as a sum of positive squares in 2 ways, for example, as 70190884 + 37636 = 8378^2 + 194^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 70228520.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 877817 + ... + 877896.

Almost surely, 2^70228520 is an apocalyptic number.

It is an amenable number.

70228520 is an abundant number, since it is smaller than the sum of its proper divisors (87785740).

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

70228520 is a wasteful number, since it uses less digits than its factorization.

70228520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1755724 (or 1755720 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 26.

The square root of 70228520 is about 8380.2458197836. The cubic root of 70228520 is about 412.5765171798.

The spelling of 70228520 in words is "seventy million, two hundred twenty-eight thousand, five hundred twenty".