70028540 has 12 divisors (see below), whose sum is σ = 147059976. Its totient is φ = 28011408.

The previous prime is 70028527. The next prime is 70028551. The reversal of 70028540 is 4582007.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1750694 + ... + 1750733.

It is an arithmetic number, because the mean of its divisors is an integer number (12254998).

Almost surely, 2^70028540 is an apocalyptic number.

It is an amenable number.

70028540 is an abundant number, since it is smaller than the sum of its proper divisors (77031436).

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

70028540 is a wasteful number, since it uses less digits than its factorization.

70028540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3501436 (or 3501434 counting only the distinct ones).

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

The square root of 70028540 is about 8368.3056827532. The cubic root of 70028540 is about 412.1845326003.

The spelling of 70028540 in words is "seventy million, twenty-eight thousand, five hundred forty".