1452214728 has 24 divisors (see below), whose sum is σ = 3933081750. Its totient is φ = 484071552.

The previous prime is 1452214703. The next prime is 1452214763. The reversal of 1452214728 is 8274122541.

It can be written as a sum of positive squares in only one way, i.e., 908299044 + 543915684 = 30138^2 + 23322^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×1452214728² = 4217855232440227968, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1452214692 and 1452214701.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10084753 + ... + 10084896.

Almost surely, 2^1452214728 is an apocalyptic number.

1452214728 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1452214728 is an abundant number, since it is smaller than the sum of its proper divisors (2480867022).

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

1452214728 is a wasteful number, since it uses less digits than its factorization.

1452214728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20169661 (or 20169654 counting only the distinct ones).

The product of its digits is 35840, while the sum is 36.

The square root of 1452214728 is about 38107.9352366407. The cubic root of 1452214728 is about 1132.4271654692.

The spelling of 1452214728 in words is "one billion, four hundred fifty-two million, two hundred fourteen thousand, seven hundred twenty-eight".