1631472 has 40 divisors (see below), whose sum is σ = 4322640. Its totient is φ = 529920.

The previous prime is 1631471. The next prime is 1631489. The reversal of 1631472 is 2741361.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1631471) 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, 1554 + ... + 2382.

It is an arithmetic number, because the mean of its divisors is an integer number (108066).

2^1631472 is an apocalyptic number.

1631472 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1631472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2161320).

1631472 is an abundant number, since it is smaller than the sum of its proper divisors (2691168).

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

1631472 is a wasteful number, since it uses less digits than its factorization.

1631472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 881 (or 875 counting only the distinct ones).

The product of its digits is 1008, while the sum is 24.

The square root of 1631472 is about 1277.2908830803. The cubic root of 1631472 is about 117.7226080233.

The spelling of 1631472 in words is "one million, six hundred thirty-one thousand, four hundred seventy-two".