2154740 has 24 divisors (see below), whose sum is σ = 5171712. Its totient is φ = 738720.

The previous prime is 2154731. The next prime is 2154743. The reversal of 2154740 is 474512.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2154743) 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, 7556 + ... + 7835.

It is an arithmetic number, because the mean of its divisors is an integer number (215488).

2^2154740 is an apocalyptic number.

2154740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2154740 is an abundant number, since it is smaller than the sum of its proper divisors (3016972).

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

2154740 is a wasteful number, since it uses less digits than its factorization.

2154740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15407 (or 15405 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 23.

The square root of 2154740 is about 1467.9032665677. The cubic root of 2154740 is about 129.1610671639.

The spelling of 2154740 in words is "two million, one hundred fifty-four thousand, seven hundred forty".