1534391040 has 288 divisors, whose sum is σ = 6032710656. Its totient is φ = 323665920.

The previous prime is 1534391003. The next prime is 1534391057. The reversal of 1534391040 is 401934351.

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 = 1534390989 and 1534391007.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 347245 + ... + 351635.

It is an arithmetic number, because the mean of its divisors is an integer number (20946912).

Almost surely, 2^1534391040 is an apocalyptic number.

1534391040 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 1534391040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3016355328).

1534391040 is an abundant number, since it is smaller than the sum of its proper divisors (4498319616).

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

1534391040 is a wasteful number, since it uses less digits than its factorization.

1534391040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4435 (or 4421 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 1534391040 is about 39171.3037822332. The cubic root of 1534391040 is about 1153.3966471158.

The spelling of 1534391040 in words is "one billion, five hundred thirty-four million, three hundred ninety-one thousand, forty".