1497990 has 64 divisors (see below), whose sum is σ = 4064256. Its totient is φ = 350592.

The previous prime is 1497983. The next prime is 1497997. The reversal of 1497990 is 997941.

It is an interprime number because it is at equal distance from previous prime (1497983) and next prime (1497997).

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1497997) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8887 + ... + 9053.

It is an arithmetic number, because the mean of its divisors is an integer number (63504).

2^1497990 is an apocalyptic number.

1497990 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 1497990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2032128).

1497990 is an abundant number, since it is smaller than the sum of its proper divisors (2566266).

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

1497990 is a wasteful number, since it uses less digits than its factorization.

1497990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213.

The product of its (nonzero) digits is 20412, while the sum is 39.

The square root of 1497990 is about 1223.9240172494. The cubic root of 1497990 is about 114.4202708305.

The spelling of 1497990 in words is "one million, four hundred ninety-seven thousand, nine hundred ninety".