1057604340 has 192 divisors, whose sum is σ = 3450553344. Its totient is φ = 239665152.

The previous prime is 1057604321. The next prime is 1057604351. The reversal of 1057604340 is 434067501.

1057604340 = T₅₆₇₂ + T₅₆₇₃ + ... + T₅₇₃₆.

It is a super-2 number, since 2×1057604340² = 2237053879973671200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 1057604298 and 1057604307.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 622372 + ... + 624068.

It is an arithmetic number, because the mean of its divisors is an integer number (17971632).

Almost surely, 2^1057604340 is an apocalyptic number.

1057604340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1057604340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1725276672).

1057604340 is an abundant number, since it is smaller than the sum of its proper divisors (2392949004).

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

1057604340 is a wasteful number, since it uses less digits than its factorization.

1057604340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1786 (or 1784 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 30.

The square root of 1057604340 is about 32520.8293252186. The cubic root of 1057604340 is about 1018.8441154598.

The spelling of 1057604340 in words is "one billion, fifty-seven million, six hundred four thousand, three hundred forty".