1072290 has 32 divisors (see below), whose sum is σ = 2658816. Its totient is φ = 276480.

The previous prime is 1072231. The next prime is 1072301. The reversal of 1072290 is 922701.

It is a happy number.

It is a super-2 number, since 2×1072290² = 2299611688200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 354 + ... + 1506.

It is an arithmetic number, because the mean of its divisors is an integer number (83088).

2^1072290 is an apocalyptic number.

1072290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1072290, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1329408).

1072290 is an abundant number, since it is smaller than the sum of its proper divisors (1586526).

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

1072290 is a wasteful number, since it uses less digits than its factorization.

1072290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1194.

The product of its (nonzero) digits is 252, while the sum is 21.

The square root of 1072290 is about 1035.5143649414. The cubic root of 1072290 is about 102.3538269413.

Adding to 1072290 its reverse (922701), we get a palindrome (1994991).

The spelling of 1072290 in words is "one million, seventy-two thousand, two hundred ninety".