1523401040 has 40 divisors (see below), whose sum is σ = 4047895680. Its totient is φ = 522308736.

The previous prime is 1523401031. The next prime is 1523401049. The reversal of 1523401040 is 401043251.

It is an interprime number because it is at equal distance from previous prime (1523401031) and next prime (1523401049).

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1523401049) 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 7 ways as a sum of consecutive naturals, for example, 1359620 + ... + 1360739.

It is an arithmetic number, because the mean of its divisors is an integer number (101197392).

Almost surely, 2^1523401040 is an apocalyptic number.

1523401040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1523401040 is an abundant number, since it is smaller than the sum of its proper divisors (2524494640).

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

1523401040 is a wasteful number, since it uses less digits than its factorization.

1523401040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2720379 (or 2720373 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 1523401040 is about 39030.7704253964. The cubic root of 1523401040 is about 1150.6363308831.

Adding to 1523401040 its reverse (401043251), we get a palindrome (1924444291).

The spelling of 1523401040 in words is "one billion, five hundred twenty-three million, four hundred one thousand, forty".