7454421780 has 96 divisors (see below), whose sum is σ = 22493116800. Its totient is φ = 1833696768.

The previous prime is 7454421763. The next prime is 7454421811. The reversal of 7454421780 is 871244547.

It is a congruent number.

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, 1798951 + ... + 1803089.

It is an arithmetic number, because the mean of its divisors is an integer number (234303300).

Almost surely, 2^7454421780 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 7454421780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11246558400).

7454421780 is an abundant number, since it is smaller than the sum of its proper divisors (15038695020).

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

7454421780 is a wasteful number, since it uses less digits than its factorization.

7454421780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6473 (or 6471 counting only the distinct ones).

The product of its (nonzero) digits is 250880, while the sum is 42.

The square root of 7454421780 is about 86338.9933923253. The cubic root of 7454421780 is about 1953.4605900337.

The spelling of 7454421780 in words is "seven billion, four hundred fifty-four million, four hundred twenty-one thousand, seven hundred eighty".