1493397728 has 24 divisors (see below), whose sum is σ = 3067959888. Its totient is φ = 714233344.

The previous prime is 1493397727. The next prime is 1493397749. The reversal of 1493397728 is 8277933941.

It is a self number, because there is not a number n which added to its sum of digits gives 1493397728.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1493397727) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1013801 + ... + 1015272.

It is an arithmetic number, because the mean of its divisors is an integer number (127831662).

Almost surely, 2^1493397728 is an apocalyptic number.

It is an amenable number.

1493397728 is an abundant number, since it is smaller than the sum of its proper divisors (1574562160).

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

1493397728 is a wasteful number, since it uses less digits than its factorization.

1493397728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2029106 (or 2029098 counting only the distinct ones).

The product of its digits is 2286144, while the sum is 53.

The square root of 1493397728 is about 38644.5044993463. The cubic root of 1493397728 is about 1143.0322802311.

The spelling of 1493397728 in words is "one billion, four hundred ninety-three million, three hundred ninety-seven thousand, seven hundred twenty-eight".