7740021000 has 128 divisors (see below), whose sum is σ = 24738255360. Its totient is φ = 2013632000.

The previous prime is 7740020999. The next prime is 7740021031. The reversal of 7740021000 is 1200477.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 91537 + ... + 154463.

It is an arithmetic number, because the mean of its divisors is an integer number (193267620).

Almost surely, 2^7740021000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7740021000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12369127680).

7740021000 is an abundant number, since it is smaller than the sum of its proper divisors (16998234360).

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

7740021000 is a wasteful number, since it uses less digits than its factorization.

7740021000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62992 (or 62978 counting only the distinct ones).

The product of its (nonzero) digits is 392, while the sum is 21.

The square root of 7740021000 is about 87977.3891406195. The cubic root of 7740021000 is about 1978.0960679740.

Adding to 7740021000 its reverse (1200477), we get a palindrome (7741221477).

The spelling of 7740021000 in words is "seven billion, seven hundred forty million, twenty-one thousand".