1072390 has 16 divisors (see below), whose sum is σ = 2106000. Its totient is φ = 389920.

The previous prime is 1072387. The next prime is 1072397. The reversal of 1072390 is 932701.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1072397) 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, 4765 + ... + 4984.

It is an arithmetic number, because the mean of its divisors is an integer number (131625).

2^1072390 is an apocalyptic number.

1072390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1072390 is a deficient number, since it is larger than the sum of its proper divisors (1033610).

1072390 is a wasteful number, since it uses less digits than its factorization.

1072390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9767.

The product of its (nonzero) digits is 378, while the sum is 22.

The square root of 1072390 is about 1035.5626489981. The cubic root of 1072390 is about 102.3570086255.

The spelling of 1072390 in words is "one million, seventy-two thousand, three hundred ninety".