2991728454 has 32 divisors (see below), whose sum is σ = 7029517824. Its totient is φ = 836846880.

The previous prime is 2991728447. The next prime is 2991728461. The reversal of 2991728454 is 4548271992.

It is an interprime number because it is at equal distance from previous prime (2991728447) and next prime (2991728461).

It is a junction number, because it is equal to n+sod(n) for n = 2991728397 and 2991728406.

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, 1742574 + ... + 1744289.

It is an arithmetic number, because the mean of its divisors is an integer number (219672432).

Almost surely, 2^2991728454 is an apocalyptic number.

2991728454 is an abundant number, since it is smaller than the sum of its proper divisors (4037789370).

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

2991728454 is a wasteful number, since it uses less digits than its factorization.

2991728454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3486892.

The product of its digits is 1451520, while the sum is 51.

The square root of 2991728454 is about 54696.6950921169. The cubic root of 2991728454 is about 1440.9228353578.

It can be divided in two parts, 2991 and 728454, that added together give a triangular number (731445 = T₁₂₀₉).

The spelling of 2991728454 in words is "two billion, nine hundred ninety-one million, seven hundred twenty-eight thousand, four hundred fifty-four".