2621534340 has 24 divisors (see below), whose sum is σ = 7340296320. Its totient is φ = 699075808.

The previous prime is 2621534339. The next prime is 2621534413. The reversal of 2621534340 is 434351262.

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 = 2621534298 and 2621534307.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21846060 + ... + 21846179.

It is an arithmetic number, because the mean of its divisors is an integer number (305845680).

Almost surely, 2^2621534340 is an apocalyptic number.

2621534340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2621534340 is an abundant number, since it is smaller than the sum of its proper divisors (4718761980).

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

2621534340 is a wasteful number, since it uses less digits than its factorization.

2621534340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43692251 (or 43692249 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 30.

The square root of 2621534340 is about 51200.9212807738. The cubic root of 2621534340 is about 1378.8547418980.

The spelling of 2621534340 in words is "two billion, six hundred twenty-one million, five hundred thirty-four thousand, three hundred forty".