70638480 has 200 divisors, whose sum is σ = 267911424. Its totient is φ = 17107200.

The previous prime is 70638467. The next prime is 70638481. The reversal of 70638480 is 8483607.

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 (70638481) by changing a digit.

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 39 ways as a sum of consecutive naturals, for example, 70785 + ... + 71775.

Almost surely, 2^70638480 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 70638480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (133955712).

70638480 is an abundant number, since it is smaller than the sum of its proper divisors (197272944).

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

70638480 is a wasteful number, since it uses less digits than its factorization.

70638480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1027 (or 1012 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 70638480 is about 8404.6701303501. The cubic root of 70638480 is about 413.3777672199.

The spelling of 70638480 in words is "seventy million, six hundred thirty-eight thousand, four hundred eighty".