70449984 has 84 divisors (see below), whose sum is σ = 220309440. Its totient is φ = 21346560.

The previous prime is 70449971. The next prime is 70450001. The reversal of 70449984 is 48994407.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 777 + ... + 11895.

Almost surely, 2^70449984 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 70449984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110154720).

70449984 is an abundant number, since it is smaller than the sum of its proper divisors (149859456).

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

70449984 is a wasteful number, since it uses less digits than its factorization.

70449984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11148 (or 11135 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 70449984 is about 8393.4488739731. The cubic root of 70449984 is about 413.0097455816.

It can be divided in two parts, 70 and 449984, that added together give a palindrome (450054).

The spelling of 70449984 in words is "seventy million, four hundred forty-nine thousand, nine hundred eighty-four".