1045275840 has 420 divisors, whose sum is σ = 4330543536. Its totient is φ = 238629888.

The previous prime is 1045275811. The next prime is 1045275851. The reversal of 1045275840 is 485725401.

1045275840 is a `hidden beast` number, since 10 + 45 + 27 + 584 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (420).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1045275795 and 1045275804.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 1269669 + ... + 1270491.

Almost surely, 2^1045275840 is an apocalyptic number.

1045275840 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 1045275840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2165271768).

1045275840 is an abundant number, since it is smaller than the sum of its proper divisors (3285267696).

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

1045275840 is an equidigital number, since it uses as much as digits as its factorization.

1045275840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 866 (or 840 counting only the distinct ones).

The product of its (nonzero) digits is 44800, while the sum is 36.

The square root of 1045275840 is about 32330.7259429788. The cubic root of 1045275840 is about 1014.8697415085.

The spelling of 1045275840 in words is "one billion, forty-five million, two hundred seventy-five thousand, eight hundred forty".