2152021508 has 48 divisors (see below), whose sum is σ = 4704357504. Its totient is φ = 838632960.

The previous prime is 2152021507. The next prime is 2152021523. The reversal of 2152021508 is 8051202512.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is not an unprimeable number, because it can be changed into a prime (2152021507) 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, 19733 + ... + 68508.

It is an arithmetic number, because the mean of its divisors is an integer number (98007448).

Almost surely, 2^2152021508 is an apocalyptic number.

2152021508 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2152021508 is an abundant number, since it is smaller than the sum of its proper divisors (2552335996).

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

2152021508 is a wasteful number, since it uses less digits than its factorization.

2152021508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88332 (or 88330 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 26.

The square root of 2152021508 is about 46389.8858373245. The cubic root of 2152021508 is about 1291.0672633169.

The spelling of 2152021508 in words is "two billion, one hundred fifty-two million, twenty-one thousand, five hundred eight".