1534320140 has 12 divisors (see below), whose sum is σ = 3222072336. Its totient is φ = 613728048.

The previous prime is 1534320131. The next prime is 1534320143. The reversal of 1534320140 is 410234351.

It is not an unprimeable number, because it can be changed into a prime (1534320143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38357984 + ... + 38358023.

It is an arithmetic number, because the mean of its divisors is an integer number (268506028).

Almost surely, 2^1534320140 is an apocalyptic number.

1534320140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1534320140 is an abundant number, since it is smaller than the sum of its proper divisors (1687752196).

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

1534320140 is a wasteful number, since it uses less digits than its factorization.

1534320140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76716016 (or 76716014 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 1534320140 is about 39170.3987725425. The cubic root of 1534320140 is about 1153.3788817440.

Adding to 1534320140 its reverse (410234351), we get a palindrome (1944554491).

The spelling of 1534320140 in words is "one billion, five hundred thirty-four million, three hundred twenty thousand, one hundred forty".