2027155540 has 24 divisors (see below), whose sum is σ = 4258777320. Its totient is φ = 810528768.

The previous prime is 2027155511. The next prime is 2027155541. The reversal of 2027155540 is 455517202.

It can be written as a sum of positive squares in 4 ways, for example, as 157803844 + 1869351696 = 12562^2 + 43236^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2027155541) 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, 32316 + ... + 71404.

It is an arithmetic number, because the mean of its divisors is an integer number (177449055).

Almost surely, 2^2027155540 is an apocalyptic number.

2027155540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2027155540 is an abundant number, since it is smaller than the sum of its proper divisors (2231621780).

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

2027155540 is a wasteful number, since it uses less digits than its factorization.

2027155540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41691 (or 41689 counting only the distinct ones).

The product of its (nonzero) digits is 14000, while the sum is 31.

The square root of 2027155540 is about 45023.9440742368. The cubic root of 2027155540 is about 1265.5977407044.

The spelling of 2027155540 in words is "two billion, twenty-seven million, one hundred fifty-five thousand, five hundred forty".