743497920 has 224 divisors, whose sum is σ = 2861706240. Its totient is φ = 180218880.

The previous prime is 743497913. The next prime is 743497927. The reversal of 743497920 is 29794347.

743497920 is a `hidden beast` number, since 74 + 3 + 497 + 92 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (743497913) and next prime (743497927).

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 (743497927) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 91129 + ... + 98951.

Almost surely, 2^743497920 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 743497920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1430853120).

743497920 is an abundant number, since it is smaller than the sum of its proper divisors (2118208320).

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

743497920 is a wasteful number, since it uses less digits than its factorization.

743497920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7860 (or 7844 counting only the distinct ones).

The product of its (nonzero) digits is 381024, while the sum is 45.

The square root of 743497920 is about 27267.1582677770. The cubic root of 743497920 is about 905.9271025949.

The spelling of 743497920 in words is "seven hundred forty-three million, four hundred ninety-seven thousand, nine hundred twenty".