1302681428 has 6 divisors (see below), whose sum is σ = 2279692506. Its totient is φ = 651340712.

The previous prime is 1302681403. The next prime is 1302681433. The reversal of 1302681428 is 8241862031.

It can be written as a sum of positive squares in only one way, i.e., 1283215684 + 19465744 = 35822^2 + 4412^2 .

It is a super-2 number, since 2×1302681428² = 3393957805712238368, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 162835175 + ... + 162835182.

It is an arithmetic number, because the mean of its divisors is an integer number (379948751).

Almost surely, 2^1302681428 is an apocalyptic number.

It is an amenable number.

1302681428 is a deficient number, since it is larger than the sum of its proper divisors (977011078).

1302681428 is a wasteful number, since it uses less digits than its factorization.

1302681428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325670361 (or 325670359 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 35.

The square root of 1302681428 is about 36092.6783156917. The cubic root of 1302681428 is about 1092.1427501487.

The spelling of 1302681428 in words is "one billion, three hundred two million, six hundred eighty-one thousand, four hundred twenty-eight".