1057442784 has 48 divisors (see below), whose sum is σ = 2804428368. Its totient is φ = 348844032.

The previous prime is 1057442761. The next prime is 1057442797. The reversal of 1057442784 is 4872447501.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×1057442784² = 2236370482867341312, 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 in 7 ways as a sum of consecutive naturals, for example, 47467 + ... + 66090.

It is an arithmetic number, because the mean of its divisors is an integer number (58425591).

Almost surely, 2^1057442784 is an apocalyptic number.

It is an amenable number.

1057442784 is an abundant number, since it is smaller than the sum of its proper divisors (1746985584).

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

1057442784 is a wasteful number, since it uses less digits than its factorization.

1057442784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113667 (or 113659 counting only the distinct ones).

The product of its (nonzero) digits is 250880, while the sum is 42.

The square root of 1057442784 is about 32518.3453453585. The cubic root of 1057442784 is about 1018.7922344441.

The spelling of 1057442784 in words is "one billion, fifty-seven million, four hundred forty-two thousand, seven hundred eighty-four".