1213074280 has 64 divisors (see below), whose sum is σ = 3107030400. Its totient is φ = 421935360.

The previous prime is 1213074227. The next prime is 1213074281. The reversal of 1213074280 is 824703121.

It is not an unprimeable number, because it can be changed into a prime (1213074281) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49815 + ... + 70054.

It is an arithmetic number, because the mean of its divisors is an integer number (48547350).

Almost surely, 2^1213074280 is an apocalyptic number.

1213074280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1213074280 is an abundant number, since it is smaller than the sum of its proper divisors (1893956120).

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

1213074280 is a wasteful number, since it uses less digits than its factorization.

1213074280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119914 (or 119910 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 1213074280 is about 34829.2158970023. The cubic root of 1213074280 is about 1066.5039417567.

The spelling of 1213074280 in words is "one billion, two hundred thirteen million, seventy-four thousand, two hundred eighty".