30687742 has 32 divisors (see below), whose sum is σ = 49572000. Its totient is φ = 14222208.

The previous prime is 30687659. The next prime is 30687743. The reversal of 30687742 is 24778603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30687743) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 205884 + ... + 206032.

It is an arithmetic number, because the mean of its divisors is an integer number (1549125).

Almost surely, 2^30687742 is an apocalyptic number.

30687742 is a deficient number, since it is larger than the sum of its proper divisors (18884258).

30687742 is a wasteful number, since it uses less digits than its factorization.

30687742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300.

The product of its (nonzero) digits is 56448, while the sum is 37.

The square root of 30687742 is about 5539.6517941113. The cubic root of 30687742 is about 313.0797498101.

The spelling of 30687742 in words is "thirty million, six hundred eighty-seven thousand, seven hundred forty-two".