1520077068 has 72 divisors (see below), whose sum is σ = 3985690800. Its totient is φ = 488073600.

The previous prime is 1520077063. The next prime is 1520077081. The reversal of 1520077068 is 8607700251.

1520077068 is a `hidden beast` number, since 1 + 520 + 0 + 7 + 70 + 68 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (1520077063) 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 23 ways as a sum of consecutive naturals, for example, 128883 + ... + 140181.

Almost surely, 2^1520077068 is an apocalyptic number.

1520077068 is a gapful number since it is divisible by the number (18) 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 1520077068, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1992845400).

1520077068 is an abundant number, since it is smaller than the sum of its proper divisors (2465613732).

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

1520077068 is a wasteful number, since it uses less digits than its factorization.

1520077068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11447 (or 11442 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 36.

The square root of 1520077068 is about 38988.1657429533. The cubic root of 1520077068 is about 1149.7988477413.

The spelling of 1520077068 in words is "one billion, five hundred twenty million, seventy-seven thousand, sixty-eight".