1072820438 has 8 divisors (see below), whose sum is σ = 1609684032. Its totient is φ = 536259096.

The previous prime is 1072820431. The next prime is 1072820443. The reversal of 1072820438 is 8340282701.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1072820398 and 1072820407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1072820431) 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, 66470 + ... + 81017.

It is an arithmetic number, because the mean of its divisors is an integer number (201210504).

Almost surely, 2^1072820438 is an apocalyptic number.

1072820438 is a deficient number, since it is larger than the sum of its proper divisors (536863594).

1072820438 is a wasteful number, since it uses less digits than its factorization.

1072820438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151126.

The product of its (nonzero) digits is 21504, while the sum is 35.

The square root of 1072820438 is about 32753.9377480021. The cubic root of 1072820438 is about 1023.7070154587.

The spelling of 1072820438 in words is "one billion, seventy-two million, eight hundred twenty thousand, four hundred thirty-eight".