1421782272 has 216 divisors, whose sum is σ = 4265124864. Its totient is φ = 455196672.

The previous prime is 1421782231. The next prime is 1421782273. The reversal of 1421782272 is 2722871241.

1421782272 is a `hidden beast` number, since 1 + 421 + 7 + 8 + 227 + 2 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421782273) 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, 11195073 + ... + 11195199.

Almost surely, 2^1421782272 is an apocalyptic number.

1421782272 is a gapful number since it is divisible by the number (12) 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 1421782272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2132562432).

1421782272 is an abundant number, since it is smaller than the sum of its proper divisors (2843342592).

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

1421782272 is a wasteful number, since it uses less digits than its factorization.

1421782272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305 (or 288 counting only the distinct ones).

The product of its digits is 25088, while the sum is 36.

The square root of 1421782272 is about 37706.5282411415. The cubic root of 1421782272 is about 1124.4609162386.

The spelling of 1421782272 in words is "one billion, four hundred twenty-one million, seven hundred eighty-two thousand, two hundred seventy-two".