70947840 has 176 divisors, whose sum is σ = 235814400. Its totient is φ = 18186240.

The previous prime is 70947839. The next prime is 70947853. The reversal of 70947840 is 4874907.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 476086 + ... + 476234.

Almost surely, 2^70947840 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 70947840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (117907200).

70947840 is an abundant number, since it is smaller than the sum of its proper divisors (164866560).

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

70947840 is a wasteful number, since it uses less digits than its factorization.

70947840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208 (or 190 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 39.

The square root of 70947840 is about 8423.0540779458. The cubic root of 70947840 is about 413.9803486670.

The spelling of 70947840 in words is "seventy million, nine hundred forty-seven thousand, eight hundred forty".