748431990 has 48 divisors (see below), whose sum is σ = 1964839968. Its totient is φ = 197641728.

The previous prime is 748431961. The next prime is 748431991. The reversal of 748431990 is 99134847.

748431990 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (748431991) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31099 + ... + 49638.

It is an arithmetic number, because the mean of its divisors is an integer number (40934166).

Almost surely, 2^748431990 is an apocalyptic number.

748431990 is an abundant number, since it is smaller than the sum of its proper divisors (1216407978).

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

748431990 is a wasteful number, since it uses less digits than its factorization.

748431990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80853 (or 80850 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 748431990 is about 27357.4850817834. The cubic root of 748431990 is about 907.9266850377.

The spelling of 748431990 in words is "seven hundred forty-eight million, four hundred thirty-one thousand, nine hundred ninety".