1280632974 has 32 divisors (see below), whose sum is σ = 2632695936. Its totient is φ = 414992160.

The previous prime is 1280632961. The next prime is 1280632999. The reversal of 1280632974 is 4792360821.

It is a super-3 number, since 3×1280632974³ (a number of 28 digits) contains 333 as substring.

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, 471729 + ... + 474435.

It is an arithmetic number, because the mean of its divisors is an integer number (82271748).

Almost surely, 2^1280632974 is an apocalyptic number.

1280632974 is an abundant number, since it is smaller than the sum of its proper divisors (1352062962).

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

1280632974 is a wasteful number, since it uses less digits than its factorization.

1280632974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4880.

The product of its (nonzero) digits is 145152, while the sum is 42.

The square root of 1280632974 is about 35785.9326272210. The cubic root of 1280632974 is about 1085.9459917045.

The spelling of 1280632974 in words is "one billion, two hundred eighty million, six hundred thirty-two thousand, nine hundred seventy-four".