1024687428 has 24 divisors (see below), whose sum is σ = 2408142240. Its totient is φ = 339104640.

The previous prime is 1024687409. The next prime is 1024687429. The reversal of 1024687428 is 8247864201.

It is a self number, because there is not a number n which added to its sum of digits gives 1024687428.

It is not an unprimeable number, because it can be changed into a prime (1024687429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 305493 + ... + 308828.

It is an arithmetic number, because the mean of its divisors is an integer number (100339260).

Almost surely, 2^1024687428 is an apocalyptic number.

It is an amenable number.

1024687428 is an abundant number, since it is smaller than the sum of its proper divisors (1383454812).

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

1024687428 is a wasteful number, since it uses less digits than its factorization.

1024687428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 614467 (or 614465 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 42.

The square root of 1024687428 is about 32010.7392604420. The cubic root of 1024687428 is about 1008.1623376423.

The spelling of 1024687428 in words is "one billion, twenty-four million, six hundred eighty-seven thousand, four hundred twenty-eight".