1293902428 has 72 divisors (see below), whose sum is σ = 2928315264. Its totient is φ = 495331200.

The previous prime is 1293902417. The next prime is 1293902431. The reversal of 1293902428 is 8242093921.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 70798 + ... + 87178.

Almost surely, 2^1293902428 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1293902428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1464157632).

1293902428 is an abundant number, since it is smaller than the sum of its proper divisors (1634412836).

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

1293902428 is a wasteful number, since it uses less digits than its factorization.

1293902428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16443 (or 16434 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 1293902428 is about 35970.8552581114. The cubic root of 1293902428 is about 1089.6838372657.

The spelling of 1293902428 in words is "one billion, two hundred ninety-three million, nine hundred two thousand, four hundred twenty-eight".