1520136252 has 18 divisors (see below), whose sum is σ = 3842566728. Its totient is φ = 506712072.

The previous prime is 1520136251. The next prime is 1520136269. The reversal of 1520136252 is 2526310251.

It is a happy number.

1520136252 is a `hidden beast` number, since 1 + 5 + 20 + 13 + 625 + 2 = 666.

1520136252 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1520136251) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21112968 + ... + 21113039.

Almost surely, 2^1520136252 is an apocalyptic number.

1520136252 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1520136252 is an abundant number, since it is smaller than the sum of its proper divisors (2322430476).

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

1520136252 is a wasteful number, since it uses less digits than its factorization.

1520136252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42226017 (or 42226012 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 1520136252 is about 38988.9247351091. The cubic root of 1520136252 is about 1149.8137699697.

The spelling of 1520136252 in words is "one billion, five hundred twenty million, one hundred thirty-six thousand, two hundred fifty-two".