1073534640 has 80 divisors (see below), whose sum is σ = 3333843168. Its totient is φ = 285769728.

The previous prime is 1073534633. The next prime is 1073534641. The reversal of 1073534640 is 464353701.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (1073534641) 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, 143472 + ... + 150768.

Almost surely, 2^1073534640 is an apocalyptic number.

1073534640 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 1073534640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1666921584).

1073534640 is an abundant number, since it is smaller than the sum of its proper divisors (2260308528).

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

1073534640 is a wasteful number, since it uses less digits than its factorization.

1073534640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7926 (or 7920 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 33.

The square root of 1073534640 is about 32764.8384705312. The cubic root of 1073534640 is about 1023.9341337436.

The spelling of 1073534640 in words is "one billion, seventy-three million, five hundred thirty-four thousand, six hundred forty".