1463994728 has 32 divisors (see below), whose sum is σ = 3203884800. Its totient is φ = 614075712.

The previous prime is 1463994647. The next prime is 1463994737. The reversal of 1463994728 is 8274993641.

It is a super-2 number, since 2×1463994728² = 4286561127223587968, which contains 22 as substring.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 1463994728.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 275483 + ... + 280746.

It is an arithmetic number, because the mean of its divisors is an integer number (100121400).

Almost surely, 2^1463994728 is an apocalyptic number.

It is an amenable number.

1463994728 is an abundant number, since it is smaller than the sum of its proper divisors (1739890072).

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

1463994728 is a wasteful number, since it uses less digits than its factorization.

1463994728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 556289 (or 556285 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 53.

The square root of 1463994728 is about 38262.1840463923. The cubic root of 1463994728 is about 1135.4809111751.

The spelling of 1463994728 in words is "one billion, four hundred sixty-three million, nine hundred ninety-four thousand, seven hundred twenty-eight".