1428626907 has 24 divisors (see below), whose sum is σ = 2079936144. Its totient is φ = 944890944.

The previous prime is 1428626897. The next prime is 1428626933. The reversal of 1428626907 is 7096268241.

It is a happy number.

1428626907 is a `hidden beast` number, since 14 + 2 + 8 + 626 + 9 + 0 + 7 = 666.

It is not a de Polignac number, because 1428626907 - 2⁷ = 1428626779 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1428626987) 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, 1202968 + ... + 1204154.

It is an arithmetic number, because the mean of its divisors is an integer number (86664006).

Almost surely, 2^1428626907 is an apocalyptic number.

1428626907 is a deficient number, since it is larger than the sum of its proper divisors (651309237).

1428626907 is a wasteful number, since it uses less digits than its factorization.

1428626907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2139 (or 2136 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 1428626907 is about 37797.1812044232. The cubic root of 1428626907 is about 1126.2624594962.

It can be divided in two parts, 142862 and 6907, that added together give a square (149769 = 387²).

The spelling of 1428626907 in words is "one billion, four hundred twenty-eight million, six hundred twenty-six thousand, nine hundred seven".