1491972 has 24 divisors (see below), whose sum is σ = 3518592. Its totient is φ = 492000.

The previous prime is 1491967. The next prime is 1491977. The reversal of 1491972 is 2791941.

It is an interprime number because it is at equal distance from previous prime (1491967) and next prime (1491977).

It is not an unprimeable number, because it can be changed into a prime (1491977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 597 + ... + 1827.

It is an arithmetic number, because the mean of its divisors is an integer number (146608).

2^1491972 is an apocalyptic number.

1491972 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1491972 is an abundant number, since it is smaller than the sum of its proper divisors (2026620).

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

1491972 is a wasteful number, since it uses less digits than its factorization.

1491972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1339 (or 1337 counting only the distinct ones).

The product of its digits is 4536, while the sum is 33.

The square root of 1491972 is about 1221.4630571573. The cubic root of 1491972 is about 114.2668418242.

The spelling of 1491972 in words is "one million, four hundred ninety-one thousand, nine hundred seventy-two".