1490731 has 8 divisors (see below), whose sum is σ = 1657584. Its totient is φ = 1329120.

The previous prime is 1490729. The next prime is 1490737. The reversal of 1490731 is 1370941.

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

It is a cyclic number.

It is not a de Polignac number, because 1490731 - 2¹ = 1490729 is a prime.

It is a super-2 number, since 2×1490731² = 4444557828722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1490696 and 1490705.

It is not an unprimeable number, because it can be changed into a prime (1490737) 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, 696 + ... + 1861.

It is an arithmetic number, because the mean of its divisors is an integer number (207198).

2^1490731 is an apocalyptic number.

1490731 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1490731 is a deficient number, since it is larger than the sum of its proper divisors (166853).

1490731 is a wasteful number, since it uses less digits than its factorization.

1490731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2621.

The product of its (nonzero) digits is 756, while the sum is 25.

The square root of 1490731 is about 1220.9549541240. The cubic root of 1490731 is about 114.2351512192.

The spelling of 1490731 in words is "one million, four hundred ninety thousand, seven hundred thirty-one".