2072156454 has 24 divisors (see below), whose sum is σ = 4725971640. Its totient is φ = 654365088.

The previous prime is 2072156453. The next prime is 2072156461. The reversal of 2072156454 is 4546512702.

It is a happy number.

2072156454 is a `hidden beast` number, since 2 + 0 + 7 + 2 + 1 + 5 + 645 + 4 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2072156453) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3029127 + ... + 3029810.

It is an arithmetic number, because the mean of its divisors is an integer number (196915485).

Almost surely, 2^2072156454 is an apocalyptic number.

2072156454 is an abundant number, since it is smaller than the sum of its proper divisors (2653815186).

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

2072156454 is a wasteful number, since it uses less digits than its factorization.

2072156454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6058964 (or 6058961 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 36.

The square root of 2072156454 is about 45520.9452230509. The cubic root of 2072156454 is about 1274.8943045024.

The spelling of 2072156454 in words is "two billion, seventy-two million, one hundred fifty-six thousand, four hundred fifty-four".