2026154640 has 120 divisors (see below), whose sum is σ = 6566454720. Its totient is φ = 516783872.

The previous prime is 2026154621. The next prime is 2026154651. The reversal of 2026154640 is 464516202.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 2026154598 and 2026154607.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 118981 + ... + 134939.

It is an arithmetic number, because the mean of its divisors is an integer number (54720456).

Almost surely, 2^2026154640 is an apocalyptic number.

2026154640 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 2026154640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3283227360).

2026154640 is an abundant number, since it is smaller than the sum of its proper divisors (4540300080).

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

2026154640 is a wasteful number, since it uses less digits than its factorization.

2026154640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16021 (or 15992 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 2026154640 is about 45012.8275050568. The cubic root of 2026154640 is about 1265.3894117934.

The spelling of 2026154640 in words is "two billion, twenty-six million, one hundred fifty-four thousand, six hundred forty".