2154015040 has 112 divisors (see below), whose sum is σ = 5253776640. Its totient is φ = 840949760.

The previous prime is 2154015023. The next prime is 2154015119. The reversal of 2154015040 is 405104512.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2566941 + ... + 2567779.

It is an arithmetic number, because the mean of its divisors is an integer number (46908720).

Almost surely, 2^2154015040 is an apocalyptic number.

2154015040 is a gapful number since it is divisible by the number (20) 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 2154015040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2626888320).

2154015040 is an abundant number, since it is smaller than the sum of its proper divisors (3099761600).

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

2154015040 is a wasteful number, since it uses less digits than its factorization.

2154015040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1040 (or 1030 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 2154015040 is about 46411.3675730418. The cubic root of 2154015040 is about 1291.4658017080.

Adding to 2154015040 its reverse (405104512), we get a palindrome (2559119552).

The spelling of 2154015040 in words is "two billion, one hundred fifty-four million, fifteen thousand, forty".