70724940 has 96 divisors (see below), whose sum is σ = 232678656. Its totient is φ = 15824640.

The previous prime is 70724933. The next prime is 70724957. The reversal of 70724940 is 4942707.

70724940 is nontrivially palindromic in base 8.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 4459 + ... + 12701.

It is an arithmetic number, because the mean of its divisors is an integer number (2423736).

Almost surely, 2^70724940 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 70724940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (116339328).

70724940 is an abundant number, since it is smaller than the sum of its proper divisors (161953716).

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

70724940 is a wasteful number, since it uses less digits than its factorization.

70724940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8279 (or 8277 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 33.

The square root of 70724940 is about 8409.8121263201. The cubic root of 70724940 is about 413.5463536605.

The spelling of 70724940 in words is "seventy million, seven hundred twenty-four thousand, nine hundred forty".