1397792 has 54 divisors (see below), whose sum is σ = 3192399. Its totient is φ = 601920.

The previous prime is 1397783. The next prime is 1397833. The reversal of 1397792 is 2977931.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 698896 + 698896 = 836^2 + 836^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=836.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is an Ulam number.

It is a nialpdrome in base 11.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 73559 + ... + 73577.

2^1397792 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 1397792

1397792 is an abundant number, since it is smaller than the sum of its proper divisors (1794607).

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

1397792 is a wasteful number, since it uses less digits than its factorization.

1397792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70 (or 32 counting only the distinct ones).

The product of its digits is 23814, while the sum is 38.

The square root of 1397792 is about 1182.2825381439. The cubic root of 1397792 is about 111.8100521874.

It can be divided in two parts, 1 and 397792, that added together give a palindrome (397793).

The spelling of 1397792 in words is "one million, three hundred ninety-seven thousand, seven hundred ninety-two".