2154924 has 42 divisors (see below), whose sum is σ = 5661740. Its totient is φ = 717336.

The previous prime is 2154913. The next prime is 2154931. The reversal of 2154924 is 4294512.

Added to its reverse (4294512) it gives a triangular number (6449436 = T₃₅₉₁).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a zygodrome in base 3.

It is an unprimeable number.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 2547 + ... + 3285.

2^2154924 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2154924, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2830870).

2154924 is an abundant number, since it is smaller than the sum of its proper divisors (3506816).

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

2154924 is an equidigital number, since it uses as much as digits as its factorization.

2154924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 761 (or 744 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 2154924 is about 1467.9659396594. The cubic root of 2154924 is about 129.1647435487.

Adding to 2154924 its reverse (4294512), we get a triangular number (6449436 = T₃₅₉₁).

It can be divided in two parts, 215492 and 4, that added together give a triangular number (215496 = T₆₅₆).

The spelling of 2154924 in words is "two million, one hundred fifty-four thousand, nine hundred twenty-four".