1047145440 has 96 divisors (see below), whose sum is σ = 3598390656. Its totient is φ = 253852160.

The previous prime is 1047145391. The next prime is 1047145441. The reversal of 1047145440 is 445417401.

It is a tau number, because it is divible by the number of its divisors (96).

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 = 1047145398 and 1047145407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1047145441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93882 + ... + 104441.

It is an arithmetic number, because the mean of its divisors is an integer number (37483236).

Almost surely, 2^1047145440 is an apocalyptic number.

1047145440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1047145440 is an abundant number, since it is smaller than the sum of its proper divisors (2551245216).

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

1047145440 is a wasteful number, since it uses less digits than its factorization.

1047145440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198352 (or 198344 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 30.

The square root of 1047145440 is about 32359.6266974760. The cubic root of 1047145440 is about 1015.4744528127.

The spelling of 1047145440 in words is "one billion, forty-seven million, one hundred forty-five thousand, four hundred forty".