307428377 has 4 divisors (see below), whose sum is σ = 307685556. Its totient is φ = 307171200.

The previous prime is 307428353. The next prime is 307428389. The reversal of 307428377 is 773824703.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 773824703 = 419 ⋅1846837.

It can be written as a sum of positive squares in 2 ways, for example, as 1038361 + 306390016 = 1019^2 + 17504^2 .

It is a cyclic number.

It is not a de Polignac number, because 307428377 - 2⁶ = 307428313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (307428307) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 126788 + ... + 129189.

It is an arithmetic number, because the mean of its divisors is an integer number (76921389).

Almost surely, 2^307428377 is an apocalyptic number.

It is an amenable number.

307428377 is a deficient number, since it is larger than the sum of its proper divisors (257179).

307428377 is a wasteful number, since it uses less digits than its factorization.

307428377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257178.

The product of its (nonzero) digits is 197568, while the sum is 41.

The square root of 307428377 is about 17533.6355899169. The cubic root of 307428377 is about 674.9132962251.

The spelling of 307428377 in words is "three hundred seven million, four hundred twenty-eight thousand, three hundred seventy-seven".