307481428 has 6 divisors (see below), whose sum is σ = 538092506. Its totient is φ = 153740712.

The previous prime is 307481399. The next prime is 307481429. The reversal of 307481428 is 824184703.

It can be written as a sum of positive squares in only one way, i.e., 248314564 + 59166864 = 15758^2 + 7692^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (307481429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38435175 + ... + 38435182.

Almost surely, 2^307481428 is an apocalyptic number.

It is an amenable number.

307481428 is a deficient number, since it is larger than the sum of its proper divisors (230611078).

307481428 is a wasteful number, since it uses less digits than its factorization.

307481428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76870361 (or 76870359 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 37.

The square root of 307481428 is about 17535.1483597944. The cubic root of 307481428 is about 674.9521158533.

The spelling of 307481428 in words is "three hundred seven million, four hundred eighty-one thousand, four hundred twenty-eight".