1064278420 has 24 divisors (see below), whose sum is σ = 2236233384. Its totient is φ = 425473536.

The previous prime is 1064278399. The next prime is 1064278469. The reversal of 1064278420 is 248724601.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 301855876 + 762422544 = 17374^2 + 27612^2 .

It is a super-2 number, since 2×1064278420² = 2265377110555392800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24352 + ... + 52168.

It is an arithmetic number, because the mean of its divisors is an integer number (93176391).

Almost surely, 2^1064278420 is an apocalyptic number.

1064278420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1064278420 is an abundant number, since it is smaller than the sum of its proper divisors (1171954964).

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

1064278420 is a wasteful number, since it uses less digits than its factorization.

1064278420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29739 (or 29737 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 34.

The square root of 1064278420 is about 32623.2803378201. The cubic root of 1064278420 is about 1020.9827833876.

The spelling of 1064278420 in words is "one billion, sixty-four million, two hundred seventy-eight thousand, four hundred twenty".