1427949900 has 324 divisors, whose sum is σ = 5019845376. Its totient is φ = 337478400.

The previous prime is 1427949893. The next prime is 1427949923. The reversal of 1427949900 is 99497241.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 11243637 + ... + 11243763.

Almost surely, 2^1427949900 is an apocalyptic number.

1427949900 is a gapful number since it is divisible by the number (10) 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 1427949900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2509922688).

1427949900 is an abundant number, since it is smaller than the sum of its proper divisors (3591895476).

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

1427949900 is a wasteful number, since it uses less digits than its factorization.

1427949900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222 (or 181 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

The square root of 1427949900 is about 37788.2243562727. The cubic root of 1427949900 is about 1126.0845245291.

The spelling of 1427949900 in words is "one billion, four hundred twenty-seven million, nine hundred forty-nine thousand, nine hundred".