70028940 has 48 divisors (see below), whose sum is σ = 200648448. Its totient is φ = 18239424.

The previous prime is 70028923. The next prime is 70028941. The reversal of 70028940 is 4982007.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 70028898 and 70028907.

It is not an unprimeable number, because it can be changed into a prime (70028941) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 10992 + ... + 16151.

It is an arithmetic number, because the mean of its divisors is an integer number (4180176).

Almost surely, 2^70028940 is an apocalyptic number.

It is an amenable number.

70028940 is an abundant number, since it is smaller than the sum of its proper divisors (130619508).

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

70028940 is a wasteful number, since it uses less digits than its factorization.

70028940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27198 (or 27196 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 70028940 is about 8368.3295824197. The cubic root of 70028940 is about 412.1853173922.

The spelling of 70028940 in words is "seventy million, twenty-eight thousand, nine hundred forty".