29739890 has 16 divisors (see below), whose sum is σ = 54542808. Its totient is φ = 11671296.

The previous prime is 29739889. The next prime is 29739907. The reversal of 29739890 is 9893792.

It can be written as a sum of positive squares in 4 ways, for example, as 16248961 + 13490929 = 4031^2 + 3673^2 .

It is a super-2 number, since 2×29739890² = 1768922114424200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27527 + ... + 28586.

Almost surely, 2^29739890 is an apocalyptic number.

29739890 is a deficient number, since it is larger than the sum of its proper divisors (24802918).

29739890 is a wasteful number, since it uses less digits than its factorization.

29739890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56173.

The product of its (nonzero) digits is 244944, while the sum is 47.

The square root of 29739890 is about 5453.4291963864. The cubic root of 29739890 is about 309.8226179108.

The spelling of 29739890 in words is "twenty-nine million, seven hundred thirty-nine thousand, eight hundred ninety".