1523057140 has 96 divisors (see below), whose sum is σ = 3556224000. Its totient is φ = 543313920.

The previous prime is 1523057113. The next prime is 1523057143. The reversal of 1523057140 is 417503251.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1523057099 and 1523057108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1523057143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3179421 + ... + 3179899.

It is an arithmetic number, because the mean of its divisors is an integer number (37044000).

Almost surely, 2^1523057140 is an apocalyptic number.

1523057140 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 1523057140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1778112000).

1523057140 is an abundant number, since it is smaller than the sum of its proper divisors (2033166860).

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

1523057140 is a wasteful number, since it uses less digits than its factorization.

1523057140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 745 (or 743 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 1523057140 is about 39026.3646782531. The cubic root of 1523057140 is about 1150.5497409431.

The spelling of 1523057140 in words is "one billion, five hundred twenty-three million, fifty-seven thousand, one hundred forty".