774090240 has 720 divisors, whose sum is σ = 3350316816. Its totient is φ = 151388160.

The previous prime is 774090221. The next prime is 774090241. The reversal of 774090240 is 42090477.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (774090241) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 45534712 + ... + 45534728.

Almost surely, 2^774090240 is an apocalyptic number.

774090240 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 774090240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1675158408).

774090240 is an abundant number, since it is smaller than the sum of its proper divisors (2576226576).

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

774090240 is a wasteful number, since it uses less digits than its factorization.

774090240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79 (or 45 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 33.

The square root of 774090240 is about 27822.4772441276. The cubic root of 774090240 is about 918.1857124478.

The spelling of 774090240 in words is "seven hundred seventy-four million, ninety thousand, two hundred forty".