1997452224 has 84 divisors (see below), whose sum is σ = 5937431864. Its totient is φ = 665812224.

The previous prime is 1997452189. The next prime is 1997452241. The reversal of 1997452224 is 4222547991.

1997452224 is a `hidden beast` number, since 19 + 97 + 4 + 522 + 24 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 1997452224.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 48667 + ... + 79770.

Almost surely, 2^1997452224 is an apocalyptic number.

It is an amenable number.

1997452224 is an abundant number, since it is smaller than the sum of its proper divisors (3939979640).

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

1997452224 is an equidigital number, since it uses as much as digits as its factorization.

1997452224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128464 (or 128442 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The square root of 1997452224 is about 44692.8654709004. The cubic root of 1997452224 is about 1259.3858231220.

The spelling of 1997452224 in words is "one billion, nine hundred ninety-seven million, four hundred fifty-two thousand, two hundred twenty-four".