70993280 has 32 divisors (see below), whose sum is σ = 169719840. Its totient is φ = 28397056.

The previous prime is 70993259. The next prime is 70993289. The reversal of 70993280 is 8239907.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70993289) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54824 + ... + 56103.

It is an arithmetic number, because the mean of its divisors is an integer number (5303745).

Almost surely, 2^70993280 is an apocalyptic number.

It is an amenable number.

70993280 is an abundant number, since it is smaller than the sum of its proper divisors (98726560).

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

70993280 is a wasteful number, since it uses less digits than its factorization.

70993280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110946 (or 110934 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 70993280 is about 8425.7510051033. The cubic root of 70993280 is about 414.0687105417.

The spelling of 70993280 in words is "seventy million, nine hundred ninety-three thousand, two hundred eighty".