1001427264 has 42 divisors (see below), whose sum is σ = 2870412090. Its totient is φ = 333808896.

The previous prime is 1001427263. The next prime is 1001427277. The reversal of 1001427264 is 4627241001.

It can be written as a sum of positive squares in only one way, i.e., 911556864 + 89870400 = 30192^2 + 9480^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001427263) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 868719 + ... + 869870.

It is an arithmetic number, because the mean of its divisors is an integer number (68343145).

Almost surely, 2^1001427264 is an apocalyptic number.

It is an amenable number.

1001427264 is an abundant number, since it is smaller than the sum of its proper divisors (1868984826).

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

1001427264 is a wasteful number, since it uses less digits than its factorization.

1001427264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1738607 (or 1738594 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 1001427264 is about 31645.3355804611. The cubic root of 1001427264 is about 1000.4755285035.

Adding to 1001427264 its reverse (4627241001), we get a palindrome (5628668265).

The spelling of 1001427264 in words is "one billion, one million, four hundred twenty-seven thousand, two hundred sixty-four".