1620507252 has 96 divisors (see below), whose sum is σ = 4927571712. Its totient is φ = 402241536.

The previous prime is 1620507233. The next prime is 1620507253. The reversal of 1620507252 is 2527050261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1620507253) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25083 + ... + 62210.

It is an arithmetic number, because the mean of its divisors is an integer number (51328872).

Almost surely, 2^1620507252 is an apocalyptic number.

1620507252 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1620507252 is an abundant number, since it is smaller than the sum of its proper divisors (3307064460).

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

1620507252 is a wasteful number, since it uses less digits than its factorization.

1620507252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87337 (or 87335 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 30.

The square root of 1620507252 is about 40255.5244904349. The cubic root of 1620507252 is about 1174.5828613143.

The spelling of 1620507252 in words is "one billion, six hundred twenty million, five hundred seven thousand, two hundred fifty-two".