1651488 has 24 divisors (see below), whose sum is σ = 4335408. Its totient is φ = 550464.

The previous prime is 1651477. The next prime is 1651493. The reversal of 1651488 is 8841561.

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×1651488² = 5454825228288, which contains 22 as substring.

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8506 + ... + 8697.

It is an arithmetic number, because the mean of its divisors is an integer number (180642).

2^1651488 is an apocalyptic number.

It is an amenable number.

1651488 is an abundant number, since it is smaller than the sum of its proper divisors (2683920).

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

1651488 is a wasteful number, since it uses less digits than its factorization.

1651488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17216 (or 17208 counting only the distinct ones).

The product of its digits is 7680, while the sum is 33.

The square root of 1651488 is about 1285.1023305558. The cubic root of 1651488 is about 118.2020859627.

It can be divided in two parts, 165 and 1488, that added together give a triangular number (1653 = T₅₇).

The spelling of 1651488 in words is "one million, six hundred fifty-one thousand, four hundred eighty-eight".