70621280 has 48 divisors (see below), whose sum is σ = 167351184. Its totient is φ = 28162560.

The previous prime is 70621279. The next prime is 70621301. The reversal of 70621280 is 8212607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90974 + ... + 91746.

It is an arithmetic number, because the mean of its divisors is an integer number (3486483).

Almost surely, 2^70621280 is an apocalyptic number.

It is an amenable number.

70621280 is an abundant number, since it is smaller than the sum of its proper divisors (96729904).

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

70621280 is a wasteful number, since it uses less digits than its factorization.

70621280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1359 (or 1351 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 70621280 is about 8403.6468274196. The cubic root of 70621280 is about 413.3442129175.

Adding to 70621280 its reverse (8212607), we get a palindrome (78833887).

The spelling of 70621280 in words is "seventy million, six hundred twenty-one thousand, two hundred eighty".