70471980 has 144 divisors (see below), whose sum is σ = 222899040. Its totient is φ = 18011136.

The previous prime is 70471979. The next prime is 70471981. The reversal of 70471980 is 8917407.

It is an interprime number because it is at equal distance from previous prime (70471979) and next prime (70471981).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (70471981) 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 47 ways as a sum of consecutive naturals, for example, 791776 + ... + 791864.

It is an arithmetic number, because the mean of its divisors is an integer number (1547910).

Almost surely, 2^70471980 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70471980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111449520).

70471980 is an abundant number, since it is smaller than the sum of its proper divisors (152427060).

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

70471980 is a wasteful number, since it uses less digits than its factorization.

70471980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240 (or 235 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 36.

The square root of 70471980 is about 8394.7590793304. The cubic root of 70471980 is about 413.0527246170.

The spelling of 70471980 in words is "seventy million, four hundred seventy-one thousand, nine hundred eighty".