1127990 has 8 divisors (see below), whose sum is σ = 2030400. Its totient is φ = 451192.

The previous prime is 1127983. The next prime is 1127993. The reversal of 1127990 is 997211.

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

It is a super-2 number, since 2×1127990² = 2544722880200, which contains 22 as substring.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1127993) 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, 56390 + ... + 56409.

It is an arithmetic number, because the mean of its divisors is an integer number (253800).

2^1127990 is an apocalyptic number.

1127990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1127990 is a deficient number, since it is larger than the sum of its proper divisors (902410).

1127990 is a wasteful number, since it uses less digits than its factorization.

1127990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112806.

The product of its (nonzero) digits is 1134, while the sum is 29.

The square root of 1127990 is about 1062.0687360053. The cubic root of 1127990 is about 104.0962496530.

The spelling of 1127990 in words is "one million, one hundred twenty-seven thousand, nine hundred ninety".