1520738040 has 32 divisors (see below), whose sum is σ = 4562214480. Its totient is φ = 405530112.

The previous prime is 1520738029. The next prime is 1520738053. The reversal of 1520738040 is 408370251.

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 = 1520737989 and 1520738007.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6336289 + ... + 6336528.

Almost surely, 2^1520738040 is an apocalyptic number.

1520738040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1520738040 is an abundant number, since it is smaller than the sum of its proper divisors (3041476440).

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

1520738040 is a wasteful number, since it uses less digits than its factorization.

1520738040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12672831 (or 12672827 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 1520738040 is about 38996.6413938431. The cubic root of 1520738040 is about 1149.9654784848.

The spelling of 1520738040 in words is "one billion, five hundred twenty million, seven hundred thirty-eight thousand, forty".