748021680 has 240 divisors, whose sum is σ = 2889606720. Its totient is φ = 169869312.

The previous prime is 748021669. The next prime is 748021717. The reversal of 748021680 is 86120847.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 972336 + ... + 973104.

It is an arithmetic number, because the mean of its divisors is an integer number (12040028).

Almost surely, 2^748021680 is an apocalyptic number.

748021680 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 748021680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1444803360).

748021680 is an abundant number, since it is smaller than the sum of its proper divisors (2141585040).

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

748021680 is a wasteful number, since it uses less digits than its factorization.

748021680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 988 (or 979 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The square root of 748021680 is about 27349.9850091367. The cubic root of 748021680 is about 907.7607383202.

The spelling of 748021680 in words is "seven hundred forty-eight million, twenty-one thousand, six hundred eighty".