30640546 has 4 divisors (see below), whose sum is σ = 45960822. Its totient is φ = 15320272.

The previous prime is 30640537. The next prime is 30640567. The reversal of 30640546 is 64504603.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 64504603 = 41 ⋅1573283.

It can be written as a sum of positive squares in only one way, i.e., 30525625 + 114921 = 5525^2 + 339^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7660135 + ... + 7660138.

Almost surely, 2^30640546 is an apocalyptic number.

30640546 is a deficient number, since it is larger than the sum of its proper divisors (15320276).

30640546 is a wasteful number, since it uses less digits than its factorization.

30640546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15320275.

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 30640546 is about 5535.3903204742. The cubic root of 30640546 is about 312.9191678499.

The spelling of 30640546 in words is "thirty million, six hundred forty thousand, five hundred forty-six".