2124506640 has 80 divisors (see below), whose sum is σ = 6591506688. Its totient is φ = 566059008.

The previous prime is 2124506639. The next prime is 2124506653. The reversal of 2124506640 is 466054212.

It is a tau number, because it is divible by the number of its divisors (80).

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 = 2124506598 and 2124506607.

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, 353904 + ... + 359856.

Almost surely, 2^2124506640 is an apocalyptic number.

2124506640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2124506640 is an abundant number, since it is smaller than the sum of its proper divisors (4467000048).

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

2124506640 is a wasteful number, since it uses less digits than its factorization.

2124506640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7456 (or 7450 counting only the distinct ones).

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

The square root of 2124506640 is about 46092.3707352963. The cubic root of 2124506640 is about 1285.5412921391.

The spelling of 2124506640 in words is "two billion, one hundred twenty-four million, five hundred six thousand, six hundred forty".