1511152720 has 80 divisors (see below), whose sum is σ = 4380398208. Its totient is φ = 471006720.

The previous prime is 1511152673. The next prime is 1511152723. The reversal of 1511152720 is 272511151.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1511152723) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 116499 + ... + 128818.

Almost surely, 2^1511152720 is an apocalyptic number.

1511152720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1511152720 is an abundant number, since it is smaller than the sum of its proper divisors (2869245488).

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

1511152720 is a wasteful number, since it uses less digits than its factorization.

1511152720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245348 (or 245342 counting only the distinct ones).

The product of its (nonzero) digits is 700, while the sum is 25.

The square root of 1511152720 is about 38873.5478185359. The cubic root of 1511152720 is about 1147.5442796140.

Adding to 1511152720 its reverse (272511151), we get a palindrome (1783663871).

The spelling of 1511152720 in words is "one billion, five hundred eleven million, one hundred fifty-two thousand, seven hundred twenty".