1234648728 has 48 divisors (see below), whose sum is σ = 3519835800. Its totient is φ = 389888640.

The previous prime is 1234648721. The next prime is 1234648729. The reversal of 1234648728 is 8278464321.

It is a happy number.

1234648728 is a `hidden beast` number, since 123 + 46 + 487 + 2 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1234648721) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 449893 + ... + 452628.

Almost surely, 2^1234648728 is an apocalyptic number.

1234648728 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1234648728 is an abundant number, since it is smaller than the sum of its proper divisors (2285187072).

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

1234648728 is a wasteful number, since it uses less digits than its factorization.

1234648728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 902552 (or 902545 counting only the distinct ones).

The product of its digits is 516096, while the sum is 45.

The square root of 1234648728 is about 35137.5686125264. The cubic root of 1234648728 is about 1072.7893935995.

The spelling of 1234648728 in words is "one billion, two hundred thirty-four million, six hundred forty-eight thousand, seven hundred twenty-eight".