70628820 has 24 divisors (see below), whose sum is σ = 197760864. Its totient is φ = 18834336.

The previous prime is 70628771. The next prime is 70628821. The reversal of 70628820 is 2882607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70628821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 588514 + ... + 588633.

It is an arithmetic number, because the mean of its divisors is an integer number (8240036).

Almost surely, 2^70628820 is an apocalyptic number.

It is an amenable number.

70628820 is an abundant number, since it is smaller than the sum of its proper divisors (127132044).

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

70628820 is a wasteful number, since it uses less digits than its factorization.

70628820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1177159 (or 1177157 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 33.

The square root of 70628820 is about 8404.0954302054. The cubic root of 70628820 is about 413.3589228578.

The spelling of 70628820 in words is "seventy million, six hundred twenty-eight thousand, eight hundred twenty".